Source | Instrument | Notes |
1A 0535+262... | MIT76 | Exponential fit. Power-law fit is unacceptable |
1A 0535+262... | BATSE | 52 day outburst. Peak flux quoted. Extensive QPO and timing analysis presented |
1A 0535+262... | LEGS | Pulsations with P=103.79±0.01 s and double-peaked light curve |
1A 0535+262... | HEXE | Apr 8/9 combined data quoted here. Decrease in flux on the 14th. Shows pulse profiles. Fit included lower energy TTM data. Shows phase-resolved spectroscopy |
1A 0535+262... | Ariel 5 | Blackbody fit. Spectral fit is for Apr 27 28. Discusses light curve and spectral evolution |
1A 0535+262... | SIGNE 2MP | Average flux quoted is peak for the observation. Variability shown |
1A 0535+262... | TESRE/XG81 | Wien fit to pulse-averaged spectrum quoted. Also presents pulse-phase spectroscopy, null search for cyclotron lines, and study of short-term variability |
1A 0535+262... | POKER | Total emission quoted |
1A 0535+262... | HEAO A4 | Average flux assumes photon index 2.0 |
1A 0535+262... | OSSE | Power law modified by the factor e^{E/(17.8+5.4,-3.8 keV)×e^{-L(E)}, where L(E)=sum_{i=1,2} tau(nW)^2 (E/nEL)^{2}/[(E-nEL)^{2}+(nW)^{2}], where E(L)=55.0i, W is HWHM and equals 14.2 keV, tau is optical depth and is 0.10 for i=1, 1.8 for i=2. Average flux is quoted with variability shown |
1A 0535+262... | Marshall76 | · · · |
1A 0535+262... | SIGNE 2MP | · · · |
1A 0535+262... | MIFRASO | 2 sigma upper limit. Clearly detected below 56 keV |
1A 1742-294... | HEAO A4 | Average flux assumes photon index 2.0. Variable |
1E 1740.7-2942... | POKER | Highly variable. Possibly some source confusion at low energies |
1E 1740.7-2942... | SIGMA | Comptonization model with optical depth 1.9(+0.7, -0.6). Possible line at 350 keV. See Churazov et al. 1993 regarding earlier SIGMA observations and Bouchet et al. 1991 regarding variable annihilation radiation |
1E 1740.7-2942... | HEXE | Best-fit power law with exponential cutoff; cutoff energy 26.5 keV and folding energy 52.8 keV; spectral fit includes lower energy data |
1E 1740.7-2942... | GRIP | Also gives 2 sigma upper limit of 3.7×10-4 cm-2 s-1 for 511 keV line flux |
1E 1740.7-2942... | OSSE | · · · |
1E 1740.7-2942... | BATSE | Reduced flux during a 1992 Sep observation. Discusses comparison with SIGMA flare observations. Also detected in the 100 300 keV range. Some source confusion possible |
1E 1740.7-2942... | COMPTEL | 2 sigma upper limit. Limits at higher energies also listed |
4U 0352+30... | HEAO A4 | Spectral index is for a hard tail superposed on a 7 keV thermal fit. Also observed in 1977 Aug and 1978 Feb |
4U 0115+63... | OSSE | Exponential fit at peak of outburst. Shows flux and spectral development along with multiwavelength observations. Also describes BATSE 20 50 keV observations |
4U 0115+63... | Whipple85 | Also gives limit to pulsed emission |
4U 1543-47... | BATSE | Monitoring of outburst |
4U 1626-67... | NRL | · · · |
4U 1626-67... | HEAO A4 | Average flux assumes a photon index 2.0 |
4U 1630-47... | BATSE | Average low-level outburst flux quoted. Shows light curves and image |
4U 1630-47... | COMPTEL | Upper limits at higher energies also listed |
4U 1700-377... | BATSE | OTTB fit with average flux. Presents light curves, analysis of binary orbit, and upper limits to pulsed flux |
4U 1700-377... | SIGMA | Values listed are for flare spectrum. Light curves and spectral variability are shown and discussed. Thermal brehmstrahlung with kT 45 keV is a better fit |
4U 1700-377... | HEAO A4 | Average flux assumes photon index 2.0 |
4U 1700-377... | SAS 2 | Quoted dates are mission duration |
A0620-00... | Ariel 5 | October numbers quoted here. Aug flux is smaller, which when combined with X-ray data shows anticorrelated hard/soft X-rays |
A0620-00... | COMPTEL | Upper limits at higher energies also listed |
A1118-616... | BATSE | Spectrum at the peak of outburst quoted |
A1742-2942... | SIGMA | Variable. Upper limits or reduced flux for several other epochs |
Aql X-1... | BATSE | Several outbursts detected. Numbers here are for 1991 Aug 21 31. Also plots image and light curve |
Aql X-1... | HEAO A4 | Average flux assumes photon index 2.0 |
Cen X-3... | Ariel 5 | Reduced flux during two other observations. Evans et al. 1980 give upper limits to cyclotron line emission |
Cen X-3... | HEAO A4 | Average flux assumes photon index 2.0 |
Cen X-3... | SAS 2 | · · · |
Cen X-3... | EGRET | · · · |
Cen X-3... | Narrabri75 | 3 sigma upper limit |
Cen X-3... | JANZOS | Upper limit to total emission (95%). No pulsed emission |
Cen X-4... | SIGNE 2MP | Provides thermal brehmstrahlung fits at three epochs. Flux quoted is for peak outburst |
Cyg X-1... | HEAO A4 | Sunyaev & Titarchuk model fit. See also Nolan & Matteson 1983 regarding possible annihilation line and Levine et al. 1984. Evidence for an excess above 500 keV |
Cyg X-1... | POKER | QPOs detected at 0.013 and 0.04 Hz |
Cyg X-1... | Saclay | · · · |
Cyg X-1... | OSO 8 | Numbers quoted are for 1976 Oct 27 31. Four other observations show a similar spectrum with a fifth showing softer high-state emission |
Cyg X-1... | MIFRASO | Also gives Comptonization fits. Makes comparisons with other observationss |
Cyg X-1... | MIT68 | · · · |
Cyg X-1... | BOEING | · · · |
Cyg X-1... | TESRE73 | "Normal" spectrum quoted, which does not include a 10 minute flare period which showed a softer spectrum |
Cyg X-1... | HEXE | Compton reflection model with covering fraction = 0.59±0.04. Average flux quoted. Shows results of timing analysis |
Cyg X-1... | Leiden | Some possible contamination from Cyg X-2 and Cyg A |
Cyg X-1... | UCSD66 | · · · |
Cyg X-1... | MIT69 | May have some Cyg X-3 contamination |
Cyg X-1... | Tata71 | Extensive discussion of previous measurements. Variability analysis. Also describes a 1969 Apr 16 flight |
Cyg X-1... | LLL | · · · |
Cyg X-1... | MPI76 | No good reference for detector; X-ray burst experiment in development |
Cyg X-1... | UNH70 | · · · |
Cyg X-1... | BATSE | Quoted spectrum is for a newly defined ultralow state detected over one 40 day period. Displays the light curve and describes spectral/flux changes over several other epochs. also see Crary et al. 1996 |
Cyg X-1... | MISO | May values stated here. Oct values are representative of the "super-low state." Thermal and Comptonized fits also calculated. see Bassani et al. 1989 for a reanalysis |
Cyg X-1... | Ariel 5 | The spectral fit is for May 11 15 and includes lower energy data. Previously recorded flux is higher, which when combined with X-ray data shows anticorrelated hard/soft X-rays |
Cyg X-1... | PRLA | Time-averaged values shown. Variability discussed |
Cyg X-1... | SMM/JXRBS | Sunyaev & Titarchuk model with tau = 2.9±0.3. Peak flux quoted. Spectral values are for "quiescent" period from 1987 Feb 1 Apr 3. Also presents light curves and outburst spectrum |
Cyg X-1... | Rice68 | Broken power law with break energy in parenthesis. Exponential fit is also quoted. Haymes & Harnden 1970 give details of a later flight (1969 Jun 4) with the same instrument which yielded similar results |
Cyg X-1... | SIGMA | Comptonizaton model fit with tau = 2.02±0.13 |
Cyg X-1... | HEAO 3 | Numbers quoted are for the 1979 Sep data which define the "super-low state." Light curve and alternative fits and spectra for other states are shown. Further variability studies can be found in Ling et al. 1987 |
Cyg X-1... | OSSE | Fit includes an exponential cutoff of the form e[-E/158+/-3(+/-12)]. Systematic errors are in parenthesis. No evidence of a broad MeV feature or annihilation radiation. Spectrum quoted is the average. Also addresses of curves, hardness ratios, alternative spectral forms, and spectral variability |
Cyg X-1... | MIT67 | Also seen at lower energies. See Overbeck, Womack, & Tananbaum (1967) regarding an earlier observation from 1966 Sep |
Cyg X-1... | CESRE76 | Flux values at higher energies plotted |
Cyg X-1... | CESR78 | Shows flux points up to 3 MeV |
Cyg X-1... | UNHDGT | Spectral fit has reduced chi2 of 1.71. Apparent 2 9 MeV hard excess |
Cyg X-1... | COMPTEL | Wien spectral fit shows no evidence for MeV excess. Flux and spectrum are for the August observation |
Cyg X-1... | Southampton73 | 2 sigma upper limit. Possible weak detection data if all data from 1 10 MeV are combined |
Cyg X-1... | UCR | 2 sigma upper limit. Limits at higher energies included |
Cyg X-1... | MPI73 | 2 sigma upper limit assumes power-law index 2.0 |
Cyg X-1... | SMM/GRS | 3 sigma upper limit to steady flux from neutron capture line |
Cyg X-1... | Southampton | 2 sigma upper limit |
Cyg X-1... | SAS 2 | · · · |
Cyg X-2... | Saclay | · · · |
Cyg X-2... | NRL | · · · |
Cyg X-2... | TESRE/XG81 | Thermal brehmstrahlung and exponential fits also consistent with the data |
Cyg X-2... | UNH70 | Approximate 1 sigma upper limit. Detected at lower energies |
Cyg X-2... | MPI73 | 2 sigma upper limit assumes power-law index 2.0 |
Cyg X-2... | Southampton | 2 sigma upper limit |
Cyg X-2... | SAS 2 | · · · |
Cyg X-3... | Saclay | Total spectrum ; 3 sigma upper limit |
Cyg X-3... | HEXE | Variable. Values represent the brightest of the three observations (1988 Jul); |
Cyg X-3... | OSSE | Also see Matz et al. 1996. Evidence for flux decrease preceeding a radio flare. Spectrum in high emission state quoted here hardens at lower flux |
Cyg X-3... | HEAO A4 | Average flux assumes photon index 2.0 |
Cyg X-3... | UNHDGT | Upper limits at higher energies plotted |
Cyg X-3... | OSO 7 | Broken power-law fit quoted with break energy in parenthesis. No evidence for 4.8 hr periodicity. Other spectral fits quoted. Also see Ulmer 1975 for later observations |
Cyg X-3... | Leimit | Modulated at 4.8 hr period. Also discusses COS B limits |
Cyg X-3... | MPI/AIT | Some variability found over the 2 hr observation. Bremsstrahlung fit is slightly better |
Cyg X-3... | OSO 8 | Numbers quoted are for 1975 Nov 5 17. Weak above 50 keV for individual observations, |
Cyg X-3... | SIGMA | · · · |
Cyg X-3... | Rice | Flux rising throughout the observation. Average spectrum quoted |
Cyg X-3... | UCR | 2 sigma upper limit. Also lists limits at higher energies |
Cyg X-3... | MPI73 | 2 sigma upper limit assumes power-law index 2.0 |
Cyg X-3... | SMM/GRS | 3 sigma upper limit to steady flux from neutron capture line |
Cyg X-3... | EGRET | Position of detection consistent with Cyg X-3, but no pulsed emission; also see Thompson et al. 1995 |
Cyg X-3... | COS B | 2 sigma upper limit to emission consistent with 4.8 hr periodicity |
Cyg X-3... | Southampton | 2 sigma upper limit |
Cyg X-3... | SAS 2 | Pulsed at 4.8 hr period |
Cyg X-3... | Whipple75 | 5 sigma upper limit, |
Cyg X-3... | Whipple90 | 3 sigma upper limit to steady emission. Also no evidence for 4.8 hr periodic emission. See Cawley et al. 1985a for earlier observations with possible detection |
Cyg X-3... | JPL TeV | 4.8 hr periodicity detected |
EXO 2030+375... | BATSE | Spectrum is for brightest outburst. Several observations tied to periastron passage with orbital solution given |
EXS 1737.9-2952... | EXITE | Possible double back-scattered annihilation line which accompanies an excess at hard X-ray energies |
GRO J0422+32... | SIGMA | Average flux quoted here. Light curves and other spectral models and spectral evolution are discussed. Also see Vikhlinin et al. 1995 for variability studies |
GRO J0422+32... | COMPTEL | Two-bin detection with spectrum poorly constrained. Further observations reveal reduced intensity |
GRO J0422+32... | OSSE | Shows light curve and spectrum. Also see Grove et al. 1994 for timing properties |
GRO J0422+32... | BATSE | Spectrum and flux are near peak outburst. Sunyaev-Titarchuk model used. Also see Callanan et al. 1995 for a multiwavelength perspective |
GRO J1008-57... | BATSE | Outbursts detected during four other epochs. Shows light curve and variability |
GRO J1655-40... | BATSE | Flux is peak outburst. Spectrum is for initial outburst. Shows correlations with radio outbursts. Also see Zhang et al. 1997 for a multiinstrument analysis |
GRO J1655-40... | OSSE | · · · |
GRO J1655-40... | COMPTEL | 2 sigma upper limit. Limits at higher energies also listed |
GRO J1719-24... | BATSE | Flux is during peak of the 80 day outburst. Shows spectral and flux evolution as well as power-spectral density evolution |
GRO J1719-24... | SIGMA | Comptonization model fit is for peak outburst with tau =2.3±0.1. Flux values are from the peak outburst from 1993 Sep 29 30. Shows light curves and extensive spectral fitting |
GRO J1719-24... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
GRO J1744-28... | OSSE | Burst spectrum is a power law with cutoff exponential of form e(-E/15 ± 3 keV). Shows burst and pulse profiles |
GRO J1750-27... | BATSE | Spectrum is for 1995 Aug 31 Sep 7 with spectral form flux=A×(Ep/E)e-(E-Ep)/kT. Discusses orbit and pulse period changes |
GRO J1849-03... | BATSE | Average outburst spectrum listed here. Discovery of 241 day recurrence time and discussion of possible counterparts |
GRO J1948+32... | BATSE | Monitoring of 33 day outburst. Spectrum and flux are for peak brightness. Shows flux history and folded light curves as a function of energy |
GRO J2058+42... | BATSE | Quotes flux values for 20 50 keV and shows pulse profile and outburst light curve |
GRS 1009-45... | SIGMA | · · · |
GRS 1724-308... | SIGMA | Not detected at several other epochs |
GRS 1730-312... | SIGMA | Average spectrum quoted. A slightly better fit with thermal bremstrahlung. Variable flux with some evidence for spectral evolution; |
GRS 1739-278... | SIGMA | Discusses possible counterparts |
GRS 1758-258... | POKER | · · · |
GRS 1758-258... | GRIP | Cook et al. 1991b present upper limits for a 1988 observation |
GRS 1758-258... | SIGMA | Comptonization model fit with tau =1.12(+0.35,-0.25). Numbers quoted are from average of Fall 1990 observations. Shows light curve and factor of 10 variability |
GRS 1758-258... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
GRS 1915+105... | BATSE | Peak numbers quoted here. Displays light curves |
GRS 1915+105... | SIGMA | · · · |
GRS 1915+105... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
GS 0834-43... | BATSE | Peak flux is quoted while the spectral index is an average value. Extensive pulse period and flux history are presented. Analysis of orbital parameters included. Shows energy dependence of pulse profiles |
GS 0834-43... | SIGMA | · · · |
GS 1826-24... | OSSE | Provides alternative spectral fits with combined lower energy data |
GS 1826-24... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
GS 2000+25... | HEXE/Pulsar X-1 | Bremstralung fit given here |
GS 2000+25... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
GX 1+4... | UT/UC | Paper includes pulse profiles and light curves. Greenhill et al. 1989a give more information on this flight |
GX 1+4... | Imperial/UT/IPE | Blackbody fit |
GX 1+4... | NRL | Possible line feature in the spectrum |
GX 1+4... | HEXE | Also gives alternative spectral fits. A second observation on 1988 Sep 23 27 is also described |
GX 1+4... | RICE | Detection of pulsed emission |
GX 1+4... | NRL | Timing analysis and pulse intensity variations |
GX 1+4... | BATSE | Thermal bremstrahlung fit. Shows pulse period history and relates flux history to torque changes. Discusses possibility of a retrograde accretion disk in this system. Spectrum consistent throughout monitoring |
GX 1+4... | Signe 2MP | Average flux quoted here. Variable = not detected for several weeks before stated dates. Light curves shown with estimated pulsed fraction of 37%±9% |
GX 1+4... | SIGMA | Shows light curve and pulse period history |
GX 1+4... | GRIP | 2 sigma upper limit |
GX 1+4... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 1+4... | IPE | Pulsed flux measured |
GX 1+4... | Narrabri75 | 3 sigma upper limit |
GX 17+2... | Ariel 5 | 2 sigma upper limit |
GX 17+2... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 3+1... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 301-2... | BATSE | Analysis of pulsed flux. Spectrum is calculated during periastron passage. Quotes other spectral fits during other orbital epochs. Extensive analysis of orbital variations in emission, pulse history, and orbital parameters |
GX 301-2... | Ariel 5 | Mean flux quoted here. Evans et al. 1980 give upper limits to cyclotron line emission |
GX 301-2... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 304-1... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 339-4... | HEAO A4 | Presents light curve. Not as bright during two 1978 observations. Spectral form is for high-energy tail beyond low-energy thermal component |
GX 339-4... | OSO 8 | Variable flux and spectrum. Quoted values are for first six days: hard state, transitions to soft state |
GX 339-4... | BATSE | Optically thin thermal bremstrahlung fit. Monitoring of hard state outbursts. Shows light curves and spectral evolution. Spectrum and flux are for peak outburst |
GX 339-4... | EXITE | · · · |
GX 339-4... | SIGMA | Comptonized disk model quoted here. Detection of distinct spectral states and fluxes. Numbers shown are for the highest intensity state, |
GX 339-4... | MIT71 | 2 sigma upper limit to total emission |
GX 339-4... | OSSE | Sunyaev & Titarchuk model with tau =2.39±0.09. Bright state flux listed here with significant variability detected |
GX 339-4... | Welcome-1 | Bright state flux listed. Paper includes alternate fits |
GX 339-4... | HEAO A4 | Flux assumes photon index 2.0. Not as bright at two other epochs |
GX 339-4... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
GX 340+0... | HEAO A4 | Not as bright at two other epochs. Flux assumes photon index 2.0 |
GX 340+0... | MIT71 | 2 sigma upper limit to total emission |
GX 340+0... | Narrabri75 | 3 sigma upper limit |
GX 349+2... | Ariel 5 | Average flux quoted. Somewhat weak at 50 keV. Lower fluxes reported for 1976 Feb/Mar and Dec observations |
GX 349+2... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 354-0... | SIGMA | Broken power-law fit with break energy in parenthesis. Light curve shown along with alternative fits |
GX 354-0... | BATSE | · · · |
GX 354-0... | HEAO A4 | Not as bright at two other epochs. Upper limit assumes index 2.0 |
GX 354-0... | GRIP | Also detected at lower energies |
GX 359+2... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 5-1... | Imperial/UT/IPE | Blackbody fit |
GX 5-1... | HEAO A4 | Average flux assumes photon index 2.0 |
GX 9+1... | HEAO A4 | Average flux assumes photon index 2.0 |
H0614+091... | HEAO A4 | Flux assumes photon index 2.0. Lower flux during two other observations |
H0918-549... | HEAO A4 | Average flux assumes photon index 2.0 |
H1145-619... | HEAO A4 | Average flux assumes photon index 2.0 |
H1254-690... | Ariel 5 | Mean flux quoted |
H1417-624... | BATSE | Power-law fit with exponential cutoff energy 11.9 kev. Peak pulsed flux quoted here. Shows light curves and provides an orbital analysis |
H1417-624... | HEAO A4 | Average flux assumes photon index 2.0 |
H1538-522... | HEAO A4 | Average flux assumes photon index 2.0 |
H1608-522... | BATSE | Optically thin thermal bremstrahlung fit. Peak flux and spectrum quoted. Shows light curves and spectral alternative spectral fits |
H1624-490... | HEAO A4 | Average flux assumes photon index 2.0 |
H1624-490... | MIT71 | 2 sigma upper limit to total emission |
H1636-536... | HEAO A4 | Average flux assumes photon index 2.0 |
H1658-298... | HEAO A4 | Average flux assumes photon index 2.0 |
H1705-250... | HEAO A4 | Spectral fit is for hard power-law tail after subtracting thermal bremstrahlung |
H1705-250... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
H1705-440... | BATSE | Bright outburst detected during this time. Average flux quoted |
H1705-440... | HEAO A4 | Not as bright at two other epochs. Flux assumes photon index 2.0 |
H1743-322... | HEAO A4 | Not as bright during a 1977 Sep detection. Flux assumes index 2.0 |
H1745-203... | HEAO A4 | Average flux which assumes photon index 2.0 |
H1755-338... | HEAO A4 | Average flux which assumes photon index 2.0, |
H1820-303... | BATSE | Upper limit to total emission for 10 day averages |
H1820-303... | HEAO A4 | 2 sigma upper limit |
H1820-303... | IPE | Detection based upon epoch folding. No explicit flux given |
H1822-000... | HEAO A4 | · · · |
H1907+097... | TIFR | No pulsed emission. Also describes a 1991 March flight where the source was very weak |
H1907+097... | HEAO A4 | Average flux which assumes photon index 2.0 |
Her X-1... | TESRE/XG81 | Fit includes line fixed at 52 keV with flux 3.5±1.9×10-3 cm-2 s-1 and fixed width 21 keV |
Her X-1... | Pachmarhi | Possible intense 30 minute flare |
Her X-1... | HEAO A4 | Spectral form is a power law with exponential break plus line. Spectral break is at 26.7±0.09 keV and the folding energy is 5.5±0.9 keV. Line intensity is 5.5±1.7×10-4 cm-2 s-1 with a centroid at 48±4 keV and FWHM 28±7 keV. Pulse-phase spectroscopy, pulse profile analysis and several alternative spectral fits are presented. Spectral feature around 50 keV could be emission or absorption. Levine et al. 1984 summarize all data |
Her X-1... | OSO 7 | Peak flux for the two weeks is quoted here. Light curve shows turnon of 35 day cycle |
Her X-1... | OSSE | Thermal bremstrahlung spectral fit. Light curve shows turnon of main high-state |
Her X-1... | BATSE | Thermal bremstrahlung spectral fit. Provides orbit determination |
Her X-1... | MPI/AIT | Either cyclotron emission line or lower energy absorption line. Values quoted are for emission line. Continuum emission is weak above 50 keV. Trumper et al. 1978 describe a 1976 flight |
Her X-1... | OSO 8 scintillator | · · · |
Her X-1... | Ariel 5 | Cyclotron line with significance 2.7 sigma . Gives upper limits to lines at higher harmonics |
Her X-1... | OSO 8 | 3 sigma upper limit to time-averaged line emission. Very weak continuum above 50 keV |
Her X-1... | LEGS | 2 sigma upper limit. Detected at energies below 70 keV |
Her X-1... | SAS 2 | Quoted dates are mission duration |
Her X-1... | Haleakela | Pulsed, 15 minute, transient emission. Pulse period differs slightly from X-ray peroid |
Her X-1... | Whipple85/90 | 3 sigma upper limit to steady emission |
KS 1731-260... | SIGMA | Not detected during many other observations from 1989 Mar 1991 Apr |
LMC X-4... | SIGMA | 3 sigma upper limit |
LMC X-4... | HEAO A4 | Average flux quoted assumes photon index 2.0 |
LMC X-4... | MIT71 | 2 sigma upper limit to total emission |
Nova Muscae 1991... | SIGMA | The brightest flux level quoted here (Jan 9). Lists values for other epochsa and discusses a possible annihilation line feature at higher energies |
OAO 1657-415... | SIGMA | Evidence for spin down |
OAO 1657-415... | HEAO A4 | Average flux which assumes photon index 2.0 |
PSR B1259+63... | OSSE | Unpulsed emission detected near periastron for this binary system |
Sco X-1... | MIT68 | 1 sigma upper limit to total emission |
Sco X-1... | Ariel 5 | Average flux listed. Reduced flux during a 1975 Mar observation |
Sco X-1... | Rice68 | · · · |
Sco X-1... | Imperial/UT/IPE | 1 sigma upper limit to total emission. Also not detected during a 1983 Mar 26 flight |
Sco X-1... | HEAO A4 | · · · |
Sco X-1... | OSO 8 | 2 sigma upper limit |
Sco X-1... | UNH70 | Approximate 1 sigma upper limit. Detected at lower energies |
Sco X-1... | POKER | 1 sigma upper limit. Clearly detected at lower energies |
Sco X-1... | MPI/AIT | 2 sigma upper limit. Detected below 50 keV |
Sco X-1... | SMM/GRS | 3 sigma upper limit to steady flux from neutron capture line |
Sco X-1... | SAS 2 | Quoted dates are mission duration |
Sco X-1... | Durham MkIII | DC signal. Null search for periodicity. Some observations in 1989 May revealing similar flux |
Sco X-1... | Whipple90 | 3 sigma upper limit to steady emission |
Sco X-1... | NRL | 2 sigma upper limit |
Sct X-1... | HEAO A4 | Average flux which assumes photon index 2.0 |
SGR 1806-20... | SMM | Dates quoted are the detection of the first and last of six separate bursts. Lists durations and flux values for each of the bursts. Light curves shown for the four strongest. Flux is the peak flux (varies by a factor of about 20) and spectrum quoted is for the Nov 16 bursts |
SGR 1900+14... | BATSE | Thermal bremstrahlung model fit. Spectrum for the largest burst quoted. Lists the fluence and plots the light curve for each burst |
SLX 1735-269... | SIGMA | Little sign of variability. Spectrum is averaged over all observations. Bremsstrahlung and Comptonization spectral forms also fit the data |
SMC X-1... | HEXE | Thermal bremstrahlung fit listed. Alternative fits and pulse period analysis included |
SMC X-1... | HEAO A4 | Average flux which assumes photon index 2.0 |
SMC X-1... | Imperial/UT/IPE | 1 sigma upper limit to total emission |
SMC X-3... | HEAO A4 | Flux assumes photon index 2.0. Not detected at two other epochs |
SS 433... | HEAO 3 | Time-averaged fluxes. Possible interpretation as red and blue shifted 24Mg lines |
SS 433... | Imperial/UT/IPE | 1 sigma upper limit to total emission |
SS 433... | COMPTEL | 2 sigma upper limit with limits at higher energies also listed |
SS 433... | SMM | 3 sigma upper limit is for 9 day integrations |
SS 433... | Whipple90 | 3 sigma upper limit to steady emission |
Tra X-1... | SIGMA | Not redetected during a 1991 Jan 21 observation |
Vela X-1... | HEAO A4 | Power-law fit plus exponential cutoff e-(E-28.6)/14.0 above 28.6 keV. Numbers are for average of May observations. Pulse-phase spectroscopy and pulse timing included |
Vela X-1... | MPI/AIT | Shows time-averaged light curves as a function of energy and looks at pulse-to-pulse variations. Many spectral forms quoted |
Vela X-1... | MIT71 | 2 sigma upper limit to total emission |
Vela X-1... | OSO 7 | Clearly detected at lower energies |
Vela X-1... | OSO 8 | 2 sigma upper limit. Observations at other dates also listed |
Vela X-1... | COS B | 2 sigma upper limit to pulsed emission |
Vela X-1... | SAS 2 | Date quoted is mission duration |
Vela X-1... | Narrabri | Persistent, pulsed emission |
Vela X-1... | JANZOS | Upper limit to total emission (95%). No pulsed emission |
Vela X-1... | Nooitgedacht | Persistent, pulsed emission |
X 1732-304... | SIGMA | No significant variability. Spectrum fit equally well with a thermal bremstrahlung |
Source | Instrument | Notes |
Coma Cluster... | MIFRASO | Fit includes data from a lower energy detector |
Coma Cluster... | HXR 81 | · · · |
Coma Cluster... | OSO 8 | · · · |
Coma Cluster... | HEAO A4 | · · · |
LMC... | EGRET | · · · |
NGC 253... | OSSE | Also gives upper limits to line flux |
NGC 253... | EGRET | · · · |
Perseus Cluster... | HEAO A4 | · · · |
Rho Oph... | EGRET | · · · |
Rho Oph... | COS B | · · · |
Virgo Cluster... | HEAO A4 | · · · |
Source | Instrument | Notes |
Crab... | MIFRASO | · · · |
Crab... | POKER | Numbers are for total emission first then in parenthesis pulsed emission |
Crab... | UCSD72 | Total spectrum and flux values quoted. Also gives spectra on individual days |
Crab... | UCSD66 | Also includes data from a 1965 Sep 23 flight further discussed in Peterson, Jacobson, & Pelling 1966 |
Crab... | HEAO A-4 | Values quoted are for a broken power law, first for total emission then pulsed emission. Break energies and indices are in parenthesis. |
Crab... | HEXE | Broken power law with break values in parenthesis. Some pulse-phase spectroscopy. Upper limit to 77 keV line of 1.0×10-3 cm-2 s-1 (99%). Spectral fit relies upon combining with other data sets |
Crab... | LEGS | Power-law fit with total emission followed by pulsed emission in parenthesis. Also gives 3 sigma upper limits to 0.073 and 0.40 MeV line emission of 6.2×10-4 cm-2 s-1 and 1.7×10-3 cm-2 s-1 |
Crab... | GRIS | Power-law fit with total emission followed by pulsed emission in parenthesis. Sets upper limits on line emission and gives some pulse-phase spectroscopy |
Crab... | NRL | Pulsed spectrum quoted. Best-fit spectrum for nebular emission is a broken power law with a break at about 80 keV and index going from 1.99 to 2.42. 95% upper limits to 73.3 keV line emission of 1.5×10-3 cm-2 s-1. See Strickman, Kurfess & Johnson 1982 regarding transient line emission |
Crab... | HXR 79 | Composite nebular spectrum quoted. Spectral fit assumes possible line feature at 73 keV with strength 5±1.5×10-3 cm-2 s-1 |
Crab... | MIT68 | · · · |
Crab... | Saclay | Total spectrum |
Crab... | GSFC | Total emission |
Crab... | OSO 8 | Time averaged. No spectral variability |
Crab... | UCSD/Tokyo | Total emission. Also maps the size and shape of the hard X-ray nebula |
Crab... | MIT69 | Total emission |
Crab... | MISO | Composite spectrum |
Crab... | Marshall | Pulsed emission. Provides pulse profile analysis. Pulsed flux values at higher energies available |
Crab... | Rice68 | Pulsed emission. Also see Haymes et al. 1968 |
Crab... | SIGMA | Pulsed emission. See Gilfanov et al. 1994 regarding possible transient spectral feature |
Crab... | OSSE | Phase averaged emission. Upper limits to line emission conflict with reported detections. Phase-dependent hardness ratios quoted. No evidence for time variability |
Crab... | HEAO 3 | Phase averaged emission. Also gives upper limits on 73 and 400 keV line emission of 2.8×10-4 and 1.8×10-4 cm-2 s-1. Includes some pulse-phase spectroscopy. See Ling & Dermer 1991 regarding possible MeV excess |
Crab... | Durham MK1 | Also shows evidence for variable emission at 78.9 keV |
Crab... | JPL | Composite spectrum quoted. Spectral fit assumes possible line feature at 73±1 keV with strength 3.8±0.9×10-3 cm-2 s-1 with FWHM <4.9 keV |
Crab... | RICE | Total emission and pulsed emission in parenthesis |
Crab... | Bell-Sandia | Total emission. Possible line feature at 400±1 keV with strength 2.24±0.65×10-3 cm-2 s-1 with line width <3 keV |
Crab... | NRL70 | · · · |
Crab... | UNHDGT | Presents limits on line features |
Crab... | UCSD77 | Average pulsed power quoted. Not detected during two shorter flights. Gives some evidence for excess emission in the 1 10 MeV range |
Crab... | FIGARO II | Pulsed emission. Includes pulse-phase spectroscopy.xxAlso see Massaro et al. 1991 for possible 440 keV line emission |
Crab... | UNH71 | Stated flux is for pulsed emission only |
Crab... | UCR | Pulse-shape analysis; no flux quoted |
Crab... | SMM | Flux is a 3 sigma upper limit to single day transient in a search for line emission reported by other experiments |
Crab... | Bristol | · · · |
Crab... | COMPTEL | Total pulsed spectrum. |
Crab... | Southampton | 2 sigma upper limit. Includes data up to 10 MeV. Possibly a weak detection if all data from 1 10 MeV combined |
Crab... | MPI Compton | Total emission quoted |
Crab... | Case-Western | Flux is time-averaged pulsed emission |
Crab... | NRL emulsion | · · · |
Crab... | Saclay | · · · |
Crab... | SAS 2 | Total emission followed by pulsed in parenthesis |
Crab... | EGRET | Total (pulsar) ; some evidence for pulse shape variability; pulse-phase spectroscopy; see De Jager et al. 1996a for revised unpulsed spectrum |
Crab... | COS B | Pulsed emission quoted followed by unpulsed in parenthesis. Some evidence for pulse shape variability. Spectra for main peaks and interpulse shown |
Crab... | Cornell | Flux quoted is total flux, but see Greisen et al. 1975 regarding a later flight on 1973 Jul 23 where the reported flux is much weaker for the same instrument |
Crab... | Whipple72 | Unpulsed flux reported with possible variability. See Grindlay, Helmken, & Weekes 1976 for evidence for pulsed flux for the same instrument |
Crab... | Whipple90 | Unpulsed only. 99% level upper limit of 7×10-12 cm-2 s-1 to pulsed emission |
Crab... | Ootacamund | · · · |
Crab... | ASGAT | Measured flux consistent with other TeV experiments. 99% level upper limit of 2.2×10-12 cm-2 s-1 (>600 GeV) for pulsed emission |
Crab... | HEGRA | Unpulsed emission. Flux value also carries 30% systematic error. See Petry et al. 1996 for a reanalysis |
Geminga... | MISO | 2 sigma upper limit with limits at other energies available |
Geminga... | Rice | Upper limit is 1 sigma with limits available over the rest of the energy range |
Geminga... | OSO 8 | 2 sigma upper limit. Lowest flux limit quoted. Lists upper limits in various bands at all epochs |
Geminga... | OSSE | 2 sigma upper limit to phase averaged flux which assumes power law of index 2.0. Also see Strickman et al. 1996b |
Geminga... | Ariel 5 | 2 sigma upper limit with upper limits at higher energies available |
Geminga... | MPI Compton | · · · |
Geminga... | COMPTEL | 2 sigma upper limit. Limit in 10 30 range of <3×10-7 cm-2 s-1 MeV-1 |
Geminga... | EGRET | Total emission. Includes pulse-phase spectroscopy. No evidence for light curve variability |
Geminga... | SAS 2 | Also see Mattox et al. (1992) for a reanalysis including light curve |
Geminga... | COS B | · · · |
Geminga... | Whipple75 | 5 sigma upper limit |
Geminga... | Whipple90 | 3 sigma upper limit on steady emission. Also 5 sigma pulsed limit of <6.5×10-12 cm-2 s-1 |
Geminga... | Ootacamund | Associates count rate excesses with phase of COS B measured pulsations |
PSR 0833-45... | HEAO A4 | 3 sigma pulsed upper limit. Limits at higher energies available |
PSR 0833-45... | Rice71 | · · · |
PSR 0833-45... | HEAO A4 | Average flux which assumes photon index 2.0 |
PSR 0833-45... | OSO 8 | 2 sigma upper limit |
PSR 0833-45... | OSSE | Pulsed emission analysis. Power-law and flux values are for total average pulsed flux. Also discusses multiinstrument fits. See De Jager, Harding, & Strickman 1996b regarding unpulsed spectrum |
PSR 0833-45... | Figaro II | 2 sigma pulsed upper limit |
PSR 0833-45... | UCR | · · · |
PSR 0833-45... | HEAO 3 | 2 sigma pulsed upper limit with limits at lower energies available |
PSR 0833-45... | Case-Western | · · · |
PSR 0833-45... | COMPTEL | · · · |
PSR 0833-45... | EGRET | Total emission measured. Extensive pulse-phase spectroscopy. Evaluates effects of a glitch on gamma-ray behavior |
PSR 0833-45... | SAS 2 | Should include 17% systematic uncertainty |
PSR 0833-45... | COS B | Pulsed emission measured. No unpulsed emission. Some sign of spectral changes at low and high energies. Pulse-phase spectroscopy presented |
PSR 0833-45... | Gamma-1 | · · · |
PSR 0833-45... | Narrabri75 | 3 sigma upper limit to total emission. Evidence for pulsed emission at a much lower flux |
PSR 0833-45... | BIGRAT | 95% confidence level upper limit to pulsed emission |
PSR 1055-52... | HEAO A4 | 3 sigma pulsed upper limit with limits at higher energies available |
PSR 1055-52... | SAS 2 | 2 sigma pulsed upper limit |
PSR 1055-52... | COS B | 3 sigma pulsed upper limit |
PSR 1055-52... | COMPTEL | 2 sigma upper limit to steady emission. No convincing evidence for pulsed emission |
PSR 1055-52... | EGRET | No evidence for unpulsed emission. Pulsations seen mainly above 500 MeV |
PSR 1509-58... | BATSE | Plots flux values up to 1 MeV |
PSR 1509-58... | SIGMA | Total flux quoted. Estimated to be 93%±30% pulsed based on a comparison with BATSE pulsed flux |
PSR 1509-58... | HEAO 3 | 2 sigma pulsed upper limit with limits at higher energies available |
PSR 1509-58... | OSSE | Pulsed component measured |
PSR 1509-58... | Welcome-1 | Pulsed flux |
PSR 1509-58... | COMPTEL | · · · |
PSR 1509-58... | SAS 2 | 2 sigma pulsed upper limit |
PSR 1509-58... | EGRET | 99.9% flux limit for pulsed emission |
PSR 1706-44... | OSSE | 2 sigma upper limit assuming power-law index 2.0 |
PSR 1706-44... | COMPTEL | 2 sigma upper limit to steady emission. No convincing evidence for pulsed emission |
PSR 1706-44... | EGRET | Broken power-law model with break values in parenthesis. See also Thompson et al. 1992 for an earlier analysis |
PSR 1706-44... | COS B | · · · |
PSR 1706-44... | Cangaroo | Unpulsed emission measured. The quoted flux error represents a 30% systematic error |
PSR B0656+14... | EGRET | Pulsed emission; no dc excess found |
PSR B1951+32... | OSSE | 2s upper limit to phase averaged. Pulsed emission assumes a photon index of 2.0 |
PSR B1951+32... | COMPTEL | 2 sigma upper limit to steady emission. Some weak evidence for pulsed emission |
PSR B1951+32... | EGRET | Pulsed emission measured with no evidence for unpulsed |
Source | Instrument | Notes |
3C 273... | HEAO A4 | Also see Levine et al. 1984. Flux values at lower energies also given |
3C 273... | MIFRASO | · · · |
3C 273... | TICAL | Spectral fit is poorly constrained |
3C 273... | MPI/AIT80 | · · · |
3C 273... | MPI/AIT | See Pietsch et al. 1981 regarding an earlier observation in 1978 Nov by the same instrument |
3C 273... | HEXE | Other spectral fits included |
3C 273... | SIGMA | Average numbers quoted. Not detected at two later epochs |
3C 273... | OSO 7 | 2 sigma upper limit |
3C 273... | OSO 8 | 2 sigma upper limit |
3C 273... | OSSE | Values listed are from the 1991 Jun 15 28 observation. Detected at several other periods with variable flux but little spectral change |
3C 273... | COMPTEL | Not redetected in 1991 Oct |
3C 273... | UCR | 2 sigma upper limit with limits at higher energies available |
3C 273... | COS B | · · · |
3C 273... | EGRET | · · · |
3C 273... | SAS 2 | 2 sigma upper limit |
3C 273... | Narrabri75 | 3 sigma upper limit |
3C 273... | Whipple90 | 99.9% conf. level upper limit. Higher limits for 1992 Feb Apr and 1993 Jan observations |
3C 279... | SIGMA | 2 sigma upper limit |
3C 279... | OSSE | Not detected during several other observations through 1993 5 12 |
3C 279... | COMPTEL | Not redetected in 1991 Oct |
3C 279... | EGRET | See Thompson et al. 1995 regarding other observations, |
3C 279... | SAS 2 | 2 sigma upper limit |
3C 279... | Whipple90 | 99.9% conf. level upper limit. Also lists limit 1991 Dec Apr observations |
3C 454.3... | OSSE | Upper limits at higher energies listed. Not detected during other observations |
3C 454.3... | EGRET | Variable by at least a factor of 3. Flux quoted is maximum. Also see Thompson et al. 1995 |
3C 454.3... | Whipple90 | 3 sigma upper limit. Kerrick et al. 1995 give limits for a 1993 Oct Nov observation |
CTA 102... | OSSE | Fluxes at higher energies listed. Mainly upper limits at two other epochs |
CTA 102... | EGRET | Weak detections or upper limits at three other epochs. Also see Thompson et al. 1995 |
CTA 102... | Whipple90 | 99.9% conf. level upper limit |
H1517+656... | OSSE | Upper limits at higher energies |
MRK 421... | HXR 81M | · · · |
MRK 421... | OSSE | 2 sigma upper limit with upper limits at higher energies also listed |
MRK 421... | OSO 8 | 2 sigma upper limit. Marginal detection in 25 60 keV band |
MRK 421... | HEGRA | Flux value has large systematic errors, |
MRK 421... | EGRET | Also see Thompson et al. 1995 and Sreekumar et al. 1996 for more information |
MRK 421... | SAS 2 | 2 sigma upper limit |
MRK 421... | Whipple90 | Values are from the most intense outburst. See Kerrick et al. 1995, Punch et al. 1992, and Schubnell et al. 1996 for further analysis of a larger database |
MRK 501... | OSO 8 | 2 sigma upper limit |
MRK 501... | SAS 2 | 2 sigma upper limit |
MRK 501... | Whipple90 | Average flux quoted. Some evidence for variability |
MRK 501... | HEGRA | Flux error is statistical. Add (+1.5,-0.6) systematic error |
NRAO 190... | EGRET | Lists several upper limits and detections for several other epochs. Describes multiwavelength observations for this flaring period |
OJ 287... | EGRET | Also describes multiwavelength observations |
OJ 287... | Whipple90 | 99.9% conf. level upper limit. Also gives upper limit for a 1992 Mar Apr observation |
PG 1416-129... | OSSE | Transient detection during 1/2 of a two week observation. Includes fit to data with nonsimultaneous Ginga data |
PKS 0235+164... | EGRET | Not variable during this observation, but not detected during other epochs (Thompson et al. 1995) |
PKS 0235+164... | Whipple90 | 99.9% conf. level upper limit |
PKS 0446+112... | EGRET | Average flux quoted; highly variable |
PKS 0454-234... | EGRET | · · · |
PKS 0528+134... | OSSE | Average values listed here. Fluxes at higher energies and light curve available |
PKS 0528+134... | COMPTEL | Average spectrum quoted. Evidence for spectral changes given and discussions of variability and spectral changes |
PKS 0528+134... | EGRET | Also seen during two other epochs within ±1 month of this observation. Variable over a few days. See Thompson et al. 1995, Dingus et al. 1996, and Mukherjee et al. 1996 for other analyses |
PKS 0528+134... | Whipple90 | 99.9% conf. level upper limit. Similar limit at an energy threshold of 500 GeV for a 1992 Mar observation |
PKS 1622-297... | OSSE | Best-fit power law -1.87 when combined with EGRET data |
PKS 1622-297... | EGRET | Highly variable light curve shown. Peak flux quoted here |
PKS 2155-304... | OSSE | Upper limits at higher energies. Not detected during other observations |
PKS 2155-304... | EGRET | No variability during this observation although previous observations yielded only upper limits |
QSO 1424-418... | EGRET | · · · |
QSO 0130-171... | EGRET | · · · |
QSO 0202+149... | OSSE | 2 sigma upper limit and lists upper limits at higher energies |
QSO 0202+149... | EGRET | · · · |
QSO 0202+149... | Whipple90 | 99.9% conf. level upper limit |
QSO 0208-512... | COMPTEL | Not detected during several epochs in 1991. Strange spectrum since not seen at energies directly above and below this range |
QSO 0208-512... | EGRET | Lower flux for several other observations within ±3 months |
QSO 0420-014... | EGRET | Not redetected during a second observation in 1992 May/Jun |
QSO 0458-020... | EGRET | · · · |
QSO 0521-365... | EGRET | · · · |
QSO 0537-441... | EGRET | Upper limits only for three subsequent observations |
QSO 0716+714... | OSSE | 2 sigma upper limit and lists upper limits at higher energies |
QSO 0716+714... | EGRET | Average spectrum quoted. Variable flux but no sign of spectral changes over six different observations. Also see Thompson et al. 1995 and Nolan et al. 1996 |
QSO 0716+714... | Whipple90 | 99.9% conf. level upper limit. Also gives upper limit at an energy threshold of 500 GeV for a 1992 Nov observation |
QSO 0735+178... | EGRET | · · · |
QSO 0804+499... | EGRET | · · · |
QSO 0827+243... | EGRET | · · · |
QSO 0829+046... | EGRET | · · · |
QSO 0836+710... | EGRET | · · · |
QSO 0917+449... | EGRET | Relatively steady source |
QSO 0954+556... | EGRET | No evidence for variability. Also see Thompson et al. 1995 |
QSO 0954+658... | EGRET | Not detected during several other observations. See Thompson et al. 1995 or Sreekumar et al. 1996 for more information |
QSO 1127-145... | EGRET | Not seen during other epochs. Flux value is from Thompson et al. 1995 |
QSO 1156+295... | EGRET | Not detected during many other epochs. Also see Thompson et al. 1995 (for flux) |
QSO 1156+295... | COS B | 2 sigma upper limit. Also lists limit in 50 150 MeV band |
QSO 1156+295... | Whipple90 | 99.9% conf. level upper limit |
QSO 1219+285... | Ariel 5 | 2 sigma upper limit |
QSO 1219+285... | EGRET | Average flux and spectrum quoted. Later epoch described in Thompson et al. 1995 shows some variability |
QSO 1219+285... | COS B | 2 sigma upper limit and also lists limit in 50 150 MeV band |
QSO 1219+285... | Whipple90 | 99.9% conf. level upper limit. Similar limit for a 1993 Mar Apr observation |
QSO 1222+216... | COMPTEL | Not detected at energies above and below this. Possibly identified with 2EG J1224+2155 |
QSO 1222+216... | EGRET | Flux and spectrum variable. Seen during at least one other epoch at reduced flux. Also see Thompson et al. 1995 |
QSO 1222+216... | Whipple90 | 99.9% conf. level upper limit |
QSO 1229-021... | EGRET | · · · |
QSO 1229-021... | EGRET | · · · |
QSO 1313-333... | EGRET | · · · |
QSO 1317+520... | EGRET | · · · |
QSO 1331+170... | EGRET | · · · |
QSO 1406-076... | EGRET | Long-term variability shown. Also see Thompson et al. 1995 |
QSO 1510-089... | EGRET | Weak flux. Little sign of variability. Also see Thompson et al. 1995 |
QSO 1604+159... | EGRET | Little sign of variability. Also see Thompson et al. 1995 |
QSO 1604+159... | Whipple90 | 99.9% conf. level upper limit |
QSO 1606+106... | EGRET | Detectable variability. Also see Thompson et al. 1995 |
QSO 1611+343... | EGRET | Not detected during other observations. Also see Thompson et al. 1995 |
QSO 1622-253... | EGRET | · · · |
QSO 1633+382... | EGRET | Includes multiwavelength spectrum. See Thompson et al. 1995 or Sreekumar et al. 1996 for more observations |
QSO 1633+382... | Whipple90 | 99.9% conf. level upper limit |
QSO 1730-130... | EGRET | Average flux and spectrum |
QSO 1739+522... | EGRET | Average flux and spectrum |
QSO 1908-201... | EGRET | Average flux and spectrum |
QSO 1933-400... | EGRET | Average flux and spectrum |
QSO 2005-489... | EGRET | Average flux quoted. Not claimed as a detection with inclusion of further data then reevaluated again by Lin et al. 1997 |
QSO 2022-077 6... | EGRET | Average spectrum and flux quoted |
QSO 2022-077 6... | Whipple90 | 99.9% conf. level upper limit |
QSO 2052-474... | EGRET | · · · |
QSO 2200+420... | EGRET | Also gives upper limits for many other observations from 1991 May to 1995 Jan |
QSO 2200+420... | Whipple90 | · · · |
QSO 2209+236... | EGRET | Average spectrum and flux quoted |
QSO 2356+196... | EGRET | · · · |
Source | Instrument | Notes |
3C 111... | OSO 7 | 2 sigma upper limit during second epoch quoted |
3C 111... | EGRET | 2 sigma upper limit |
3C 111... | OSSE | 1991 values quoted. See Kurfess 1994 for more spectral information |
3C 111... | COMPTEL | 2 sigma upper limit. See Maisack, Mannhaim, & Collmar 1997 for 3 30 MeV limits |
3C 111... | SAS 2 | 2 sigma upper limit |
3C 111... | Whipple90 | 99.9% conf. level upper limit |
3C 120... | MPI/AIT | 2 sigma upper limit. Limits at higher energies up to 200 keV also available |
3C 120... | EGRET | 2 sigma upper limit |
3C 120... | HEAO A4 | · · · |
3C 120... | OSSE | Average flux. See Kurfess 1994 for more spectral information |
3C 120... | COMPTEL | 2 sigma upper limit. See Maisack et al. 1997 for 3 30 MeV limits |
3C 120... | SAS 2 | 2 sigma upper limit |
3C 390.3... | HEAO A4 | · · · |
3C 390.3... | OSO 7 | 2 sigma upper limit estimate |
3C 390.3... | OSSE | Average flux. See Kurfess 1994 for more spectral information |
Cen A... | OSO 7 | High state of two observations. Also gives spectrum for 1972 Jul Aug |
Cen A... | HEAO A4 | Composite spectrum quoted |
Cen A... | Poker | · · · |
Cen A... | UCB | Spectral fit includes 1 10 keV data from a separate observation |
Cen A... | MPI/AIT | · · · |
Cen A... | HEXE | 1988 spectrum quoted. Other model fits included |
Cen A... | RICE | Possible gamma-ray lines at 1.6 and 4.5 MeV |
Cen A... | Rice68 | 95% conf. level. Upper limits at higher energies available |
Cen A... | SIGMA | Brightest of three observations quoted here. Variable flux but constant index |
Cen A... | SIGMA | Spectrum is average over all observations. See Bond et al. 1996 for a more recent analysis |
Cen A... | BATSE | Mean spectral index. Shows light curves and spectral development. Averages quoted |
Cen A... | OSSE | Broken power law with break and reference energy the same. Spectral and flux information is for the average of the 1991 observations. Shows light curves and spectral evolution. Spectral index independent of intensity at low energies. Also see Johnson et al. 1994. |
Cen A... | LEGS | Gives upper limits to MeV line emission |
Cen A... | MPI Compton | · · · |
Cen A... | UCR | Upper limits at higher energies and for line emission given |
Cen A... | SAS 2 | 2 sigma upper limit |
Cen A... | COS B | 2 sigma upper limit. Also lists limit in 50 150 MeV band |
Cen A... | Durham MKIII | 3 sigma upper limit |
Cen A... | Narrabri75 | · · · |
Cen A... | JANZOS | Upper limit to total emission (95%) |
ESO 141-G55... | EGRET | 2 sigma upper limit |
ESO 141-G55... | HEAO A4 | · · · |
ESO 141-G55... | OSSE | 2 sigma upper limit |
ESO 141-G55... | COMPTEL | 2 sigma upper limit. See Maisack et al. 1997 for 3 30 MeV limits |
IC 4329A... | Imperial/UT/IPE | 1 sigma upper limit to total emission |
IC 4329A... | OSSE | Average flux quoted |
IC 4329A... | OSSE | Includes simultaneous ROSAT observation and combined spectral fits |
IC 4329A... | COMPTEL | 2 sigma upper limit. See Maisack et al. 1997 for 3 30 MeV limits |
IC 4329A... | SAS 2 | 2 sigma upper limit |
IC 4329A... | EGRET | 2 sigma upper limit. Also lists COMPTEL limits for several bands |
IC 4329A... | COS B | 2 sigma upper limit. Also lists limit in 50 150 MeV band |
MCG +8-11-11... | EGRET | 2 sigma upper limit |
MCG +8-11-11... | OSO 8 | Peak flux and highest spectrum in a 3 day period quoted. Variable but little change in spectrum |
MCG +8-11-11... | Bologna | Average flux over two transits |
MCG +8-11-11... | MIFRASO | · · · |
MCG +8-11-11... | OSSE | Average flux quoted. See Kurfess 1994 for more spectral information |
MCG +8-11-11... | MISO | Spectral fit is for less than 1 MeV. Above this a break is needed |
MCG +8-11-11... | COMPTEL | 2 sigma upper limit. See Maisack et al. 1997 for 3 30 MeV limits |
MCG +8-11-11... | MPI Compton | Limit in 3 10 MeV band available |
MCG +8-11-11... | SAS 2 | 2 sigma upper limit |
MCG -5-23-16... | HEAO A4 | · · · |
MCG -5-23-16... | BATSE | Average flux quoted |
MCG -5-23-16... | OSSE | Average flux quoted. See Kurfess 1994 for more spectral information |
MCG -5-23-16... | SAS 2 | 2 sigma upper limit |
MCG -5-23-16... | COS B | 2 sigma upper limit. Also lists limit in 50 150 MeV band |
MCG -6-30-15... | OSSE | Average flux quoted. See Kurfess 1994 for more spectral information |
MCG -6-30-15... | COMPTEL | 2 sigma upper limit. See Maisack et al. 1997 for 3 30 MeV limits |
MCG -6-30-15... | EGRET | 2 sigma upper limit |
MKN 463... | BATSE | Average flux quoted |
MRK 279... | HEAO A4 | · · · |
MRK 279... | OSSE | See Kurfess 1994 for more spectral information |
MRK 279... | SAS 2 | 2 sigma upper limit |
MRK 279... | EGRET | 2 sigma upper limit |
MRK 509... | HEAO A4 | Average flux and spectrum |
MRK 509... | OSSE | Average flux. See Kurfess 1994 for more spectral information |
MRK 509... | MPI/AIT | 2 sigma upper limit; limits at higher energies up to 200 keV also available |
MRK 509... | COMPTEL | 2 sigma upper limit; see also Maisack et al. 1997 for 3 30 MeV limits |
MRK 509... | SAS 2 | 2 sigma upper limit |
MRK 509... | EGRET | 2 sigma upper limit |
NGC 1275... | OSO 7 | Spectrum of hard tail calculated after subtracting 6.6 keV thermal bremstrahlung contribution |
NGC 1275... | HXR 81M | · · · |
NGC 1275... | TESRE/XG81 | NGC 1275 likely source of hard tail detected from the Perseus cluster. Flux includes small component due to thermal emission |
NGC 1275... | OSSE | 3 sigma upper limit. Much weaker than previously reported detections. Upper limits at higher energies shown |
NGC 1275... | EGRET | 2 sigma upper limit |
NGC 1275... | Whipple90 | 99.9% conf. level upper limit. Also an upper limit for 1992 Dec observations at a 350 GeV energy threshold |
NGC 3783... | OSSE | See Kurfess 1994 for more spectral information |
NGC 3783... | COMPTEL | 2 sigma upper limit; see also Maisack et al. 1997 for 3 30 MeV limits |
NGC 3783... | SAS 2 | 2 sigma upper limit |
NGC 3783... | HEAO A4 | · · · |
NGC 3783... | EGRET | 2 sigma upper limit |
NGC 4151... | OSO 7 | Average spectrum quoted |
NGC 4151... | UCSD | · · · |
NGC 4151... | Ariel 5 | · · · |
NGC 4151... | SIGMA | Spectrum is average over all observations |
NGC 4151... | MISO | Alternative spectral model involves power law plus exponential tail. Perotti et al. 1981b gives results of a MISO measurement from 1979 Sep 30 showing reduced flux while Bassani et al. 1986 give upper limits for a 1980 observation |
NGC 4151... | HXR 76 | · · · |
NGC 4151... | EGRET | 2 sigma upper limit |
NGC 4151... | Whipple90 | 99.9% conf. level upper limit |
NGC 4151... | HEAO A4 | Average spectrum and flux quoted. Variability detected. Possible intensity-spectrum correlation. Other model fits given |
NGC 4151... | HXR 81M | · · · |
NGC 4151... | Bologna | Average flux over two transits |
NGC 4151... | HEXE | Spectrum for highest flux quoted. Other model fits included. Discusses relevance of reflection component |
NGC 4151... | MIFRASO | Also discusses a 1986 Jul observation |
NGC 4151... | OSSE | Broken power law with break energy and index in parenthesis. Other model fits included. Variability shown. Also see Johnson et al. 1997 |
NGC 4151... | COMPTEL | 2 sigma upper limit. See Maisack et al. 1997 for 3 30 MeV limits |
NGC 4151... | UCR | 2 sigma upper limit. Limits at higher energies available |
NGC 4151... | SAS 2 | 2 sigma upper limit |
NGC 4151... | COS B | 2 sigma upper limit. Also lists limit in 50 150 MeV band |
NGC 4388... | HEAO A4 | Average flux and spectrum. Variability detected. Fluxes at lower energies available |
NGC 4388... | BATSE | Average flux quoted |
NGC 4388... | SIGMA | Detected during observations of the Virgo cluster. May account for the total emission from the cluster |
NGC 4388... | OSSE | See Kurfess 1994 for more spectral information |
NGC 4507... | BATSE | Average flux quoted |
NGC 4507... | OSSE | Exponential fit. Extensive spectral modelling. Discusses implications for diffuse background |
NGC 4507... | COS B | 2 sigma upper limit. Also lists limit in 50 150 MeV band |
NGC 5506... | BATSE | Average flux quoted |
NGC 5548... | EGRET | 2 sigma upper limit |
NGC 5548... | HEAO A4 | · · · |
NGC 5548... | OSSE | Average flux. See Kurfess 1994 for more spectral information |
NGC 5548... | COMPTEL | 2 sigma upper limit. See also Maisack et al. 1997 for 3 30 MeV limits |
NGC 5548... | SAS 2 | 2 sigma upper limit |
NGC 6814... | HEAO A4 | · · · |
NGC 6814... | OSSE | · · · |
NGC 6814... | COMPTEL | 2 sigma upper limit. See also Maisack et al. 1997 for 3 30 MeV limits |
NGC 6814... | SAS 2 | 2 sigma upper limit |
NGC 7582... | OSSE | 2 sigma upper limit. See also Maisack et al. 1997 for 3 30 MeV limits |
NGC 7582... | COMPTEL | Average flux. See Kurfess 1994 for more spectral information |
Source | Instrument | Notes |
Cas A... | OSSE | Fit includes some lower energy data. Limits for lines also included |
Cas A... | COMPTEL | Flux from 44Ti line at 1.152±0.015 MeV nd r.m.s. width of 58±10 keV. Line is possibly Doppler broadened |
SN 1987A... | HEXE | Flux on outburst day 407 |
SN 1987A... | Pulsar X-1 | · · · |
SN 1987A... | SIGMA | 3 sigma upper limit with upper limits to line emission |
SN 1987A... | GRIP | Also gives continuum spectrum. Values at three other epochs also available. Also gives flux for 1.24 MeV line |
SN 1987A... | HEXAGONE | 2 sigma upper limit; includes upper limits several lines and continuum at higher energies up to 2 MeV |
SN 1987A... | Welcome 1 | 90% confidence level upper limit to all 57Co emission; sets limit to abundance ratio of 57Co/56Co |
SN 1987A... | Lockheed | Observation 250 days post supernova event |
SN 1987A... | GRIP | Values at three other epochs also available |
SN 1987A... | SMM | · · · |
SN 1987A... | Kosmos 1870 | · · · |
SN 1987A... | SMM | 3 sigma upper limit based on 35 day sums |
SN 1987A... | UCR | Line feature attributed to 1.238 MeV 56Co decay |
SN 1987A... | GRIP | Values at three other epochs also available |
SN 1987A... | SMM | · · · |
SN 1987A... | Kosmos 1870 | · · · |
SN 1987A... | GRAD | Also presents upper limits to 0.844 MeV emission |
SN 1987A... | GRIS | Flux on day 613. Flux available for day 433 as well. Also gives flux values for 1.24 MeV line |
SN 1987A... | JPL | Upper limits to continuum and 847 keV emission |
SN 1987A... | SMM | 3 sigma upper limit based on 35 day sums |
SN 1987A... | Kosmos 1686 | 3 sigma upper limit |
SN 1987A... | UCR | Line feature attributed to unresolved 1.77, 2.015, and 2.035 MeV lines from 56Co decay |
SN 1987A... | ADFA | 3 sigma upper limit |
SN 1987A... | Narrabri | · · · |
SN 1987A... | Potchefstroom | · · · |
SN 1993J... | OSSE | Not detected during a 1993 Jun obs. Some possibility of source confusion |
SN 1993J... | COMPTEL | 2 sigma upper limit. Also lists upper limits for other lines and for an earlier observation |
Source | Instrument | Notes |
2CG 006+00... | Comptel | 3 sigma upper limit with limits at lower energies also given |
2CG 006+00... | COS B | · · · |
2CG 006+00... | EGRET | · · · |
2CG 006+00... | Potchefstroon | 95% upper limit for pulsed emission assuming the source is PSR 1802-23 |
2CG 010-31... | COS B | · · · |
2CG 013+00... | COS B | · · · |
2CG 036+01... | OSO 8 | 2 sigma upper limit |
2CG 036+01... | COS B | · · · |
2CG 054+01... | OSO 8 | 2 sigma upper limit |
2CG 054+01... | COS B | · · · |
2CG 065+00... | OSO 8 | Possible 3.5 sigma detection over full energy range. Upper limit in this range for the first epoch |
2CG 065+00... | Ariel 5 | 2 sigma upper limit |
2CG 065+00... | COS B | · · · |
2CG 065+00... | EGRET | · · · |
2CG 065+00... | Whipple75 | 5 sigma upper limit |
2CG 075+00... | Ariel 5 | 2 sigma upper limit |
2CG 075+00... | COMPTEL | 3 sigma upper limit with limits at lower energies also given |
2CG 075+00... | COS B | · · · |
2CG 075+00... | EGRET | · · · |
2CG 075+00... | Whipple75 | 5 sigma upper limit |
2CG 078+01... | Ariel 5 | 2 sigma upper limit |
2CG 078+01... | COMPTEL | 3 sigma upper limit with limits at lower energies also given |
2CG 078+01... | COS B | · · · |
2CG 078+01... | EGRET | · · · |
2CG 078+01... | Whipple75 | 5 sigma upper limit. Hint of a detection but possible possible systematic error involved |
2CG 095+04... | OSO 8 | 2 sigma upper limit |
2CG 095+04... | COS B | · · · |
2CG 121+04... | OSO 8 | 2 sigma upper limit |
2CG 121+04... | Ariel 5 | 2 sigma upper limit |
2CG 121+04... | COS B | · · · |
2CG 121+04... | Whipple75 | 5 sigma upper limit |
2CG 135+01... | OSO 8 | 2 sigma upper limit |
2CG 135+01... | MISO | Upper limits at lower and higher energies given. Requires a break to join with >100 MeV data |
2CG 135+01... | Ariel 5 | 3.2 sigma detection over full range |
2CG 135+01... | COMPTEL | No sign of variability |
2CG 135+01... | UNHDGT | 2 sigma upper limits also quoted in many other energy bands |
2CG 135+01... | UCR | 2 sigma upper limit with limits at lower energies available |
2CG 135+01... | COS B | · · · |
2CG 135+01... | EGRET | · · · |
2CG 135+01... | Whipple75 | 5 sigma upper limit |
2CG 135+01... | Whipple90 | 2 sigma upper limit |
2CG 218-00... | COS B | · · · |
2CG 235-01... | OSO 8 | 2 sigma upper limit |
2CG 235-01... | COS B | · · · |
2CG 284-00... | OSO 8 | 2 sigma upper limit |
2CG 284-00... | COMPTEL | 3 sigma upper limit with limits at lower energies also given |
2CG 284-00... | COS B | · · · |
2CG 284-00... | EGRET | · · · |
2CG 288-00... | COMPTEL | 3 sigma upper limit with limits at lower energies also given |
2CG 288-00... | COS B | · · · |
2CG 288-00... | EGRET | · · · |
2CG 311-01... | OSO 8 | Possible 3.5 sigma detection over full energy range |
2CG 311-01... | Ariel 5 | 2 sigma upper limit |
2CG 311-01... | COS B | · · · |
2CG 311-01... | EGRET | · · · |
2CG 333+01... | OSO 8 | 2 sigma upper limit |
2CG 333+01... | Ariel 5 | 2 sigma upper limit |
2CG 333+01... | COS B | · · · |
2CG 356+00... | COS B | · · · |
2CG 359-00... | COS B | · · · |
2CG 359-00... | EGRET | Average flux quoted |
2EG 0812-0648... | EGRET | · · · |
2EG J0008+7307... | EGRET | · · · |
2EG J0119+0312... | EGRET | · · · |
2EG J0159-3557... | EGRET | · · · |
2EG J0216+1107... | EGRET | · · · |
2EG J0220+4228... | EGRET | · · · |
2EG J0239+2818... | EGRET | · · · |
2EG J0323+5126... | EGRET | · · · |
2EG J0403+3357... | EGRET | · · · |
2EG J0406+1704... | EGRET | · · · |
2EG J0422+1414... | EGRET | · · · |
2EG J0426+6618... | EGRET | · · · |
2EG J0432+2910... | EGRET | Average flux quoted |
2EG J0432+2910... | Whipple90 | 99.9% conf. level upper limit |
2EG J0437+1524... | EGRET | · · · |
2EG J0506+3424... | EGRET | · · · |
2EG J0511+5523... | EGRET | · · · |
2EG J0520+2626... | EGRET | · · · |
2EG J0521+2206... | EGRET | · · · |
2EG J0545+3943... | COMPTEL | 3 sigma upper limit with limits at lower energies also given |
2EG J0545+3943... | EGRET | · · · |
2EG J0617-0652... | EGRET | · · · |
2EG J0618+2234... | EGRET | · · · |
2EG J0635+0521... | EGRET | · · · |
2EG J0720-4746... | EGRET | Average flux quoted |
2EG J0744+5438... | EGRET | Weakr or not detected during several other observations. Proposed as a blazar candidate due to variability and possible association with radio source 87GB 073840.5+545138. Also see Thompson et al. 1995 and Nolan et al. 1996 |
2EG J0744+5438... | EGRET | · · · |
2EG J0809+5117... | EGRET | · · · |
2EG J0852-1237... | EGRET | · · · |
2EG J1054+5736... | EGRET | · · · |
2EG J1103-6106... | EGRET | · · · |
2EG J1136-0414... | EGRET | Also see Sreekumar et al. 1996; extended source |
2EG J1233-1407... | EGRET | · · · |
2EG J1233-1407... | EGRET | · · · |
2EG J1239+0441... | EGRET | · · · |
2EG J1239+0441... | EGRET | · · · |
2EG J1248-8308... | EGRET | · · · |
2EG J1324-4317... | EGRET | · · · |
2EG J1332+8821... | EGRET | · · · |
2EG J1346+2942... | EGRET | Also see Sreekumar et al. 1996 |
2EG J1430+5356... | EGRET | · · · |
2EG J1443-6040... | EGRET | · · · |
2EG J1457-1916... | EGRET | · · · |
2EG J1528-2352... | EGRET | · · · |
2EG J1631-2845... | EGRET | · · · |
2EG J1635-1427... | EGRET | · · · |
2EG J1648-5042... | EGRET | · · · |
2EG J1709-0350... | EGRET | · · · |
2EG J1718-3310... | EGRET | · · · |
2EG J1731+6007... | EGRET | · · · |
2EG J1742-2250... | EGRET | · · · |
2EG J1746-0935... | EGRET | · · · |
2EG J1746-2852... | EGRET | · · · |
2EG J1747-3039... | COMPTEL | Possible detection. Upper limits only at higher energies |
2EG J1801-2312... | COMPTEL | 3 sigma upper limit with limits at lower energies also given |
2EG J1801-2312... | EGRET | · · · |
2EG J1811-2339... | EGRET | · · · |
2EG J1813-1229... | EGRET | · · · |
2EG J1815+2950... | EGRET | · · · |
2EG J1821-7915... | EGRET | · · · |
2EG J1825-1307... | Comptel | Also seen at lower energies. Possible source confusion with 2EG J1813-1229 |
2EG J1825-1307... | EGRET | · · · |
2EG J1828+0145... | EGRET | · · · |
2EG J1834-2138... | EGRET | · · · |
2EG J1835+5919... | EGRET | · · · |
2EG J1835+5919... | Whipple90 | 99.9% conf. level upper limit |
2EG J1847-3220... | EGRET | · · · |
2EG J1850-2638... | EGRET | · · · |
2EG J1857+0118... | Comptel | 3 sigma upper limit with limits at lower energies also given |
2EG J1857+0118... | EGRET | · · · |
2EG J1950-3503... | EGRET | Spectral index is from the sum of several observations from 1991 Apr 1993 Sep |
2EG J2006-2253... | EGRET | · · · |
2EG J2026+3610... | EGRET | · · · |
2EG J2027+1054... | EGRET | · · · |
2EG J2033+4112... | EGRET | · · · |
2EG J2039+1131... | EGRET | Average flux and spectrum qoted |
2EG J2227+6122... | EGRET | · · · |
2EG J2243+1545... | EGRET | · · · |
2EG J2354+3811... | EGRET | · · · |
2EGS J0426+1636... | EGRET | · · · |
2EGS J0500+5902... | EGRET | · · · |
2EGS J0552-1026... | EGRET | Average flux |
2EGS J0555+0408... | EGRET | Average flux |
2EGS J0724-5157... | EGRET | Most significant observation quoted here |
2EGS J0852-4343... | EGRET | Average flux |
2EGS J0909+6558... | EGRET | Nodata |
2EGS J1050-7650... | EGRET | Average flux |
2EGS J1133+0037... | EGRET | · · · |
2EGS J1220-1510... | EGRET | · · · |
2EGS J1236-0416... | EGRET | · · · |
2EGS J1324+2210... | EGRET | · · · |
2EGS J1418-6049... | EGRET | · · · |
2EGS J1504-1537... | EGRET | Most significant observation quoted here |
2EGS J1642-2659... | EGRET | · · · |
2EGS J1653-4604... | EGRET | · · · |
2EGS J1703-6302... | EGRET | Most significant observation quoted here |
2EGS J1708-0927... | EGRET | · · · |
2EGS J1736-2904... | EGRET | Average flux |
2EGS J1800-4005... | EGRET | Most significant observation quoted here |
2EGS J1833-2754... | EGRET | Average flux |
2EGS J1903+0529... | EGRET | Average flux |
2EGS J1905-1120... | EGRET | Average flux |
2EGS J1954-1419... | EGRET | · · · |
2EGS J2322-0321... | EGRET | Most significant observation quoted here |
Briggs Source... | HEAO A4 | Transient detection of anihilation radiation |
GEV J0319+2407... | EGRET | · · · |
GEV J0508+0540... | EGRET | · · · |
GEV J0615+4200... | EGRET | · · · |
GEV J12026+4124... | EGRET | · · · |
GEV J1732-3130... | EGRET | · · · |
GEV J1837-0610... | EGRET | · · · |
GEV J1907-0557... | EGRET | · · · |
GEV J2035+1622... | EGRET | · · · |
GEV J2053+5644... | EGRET | · · · |
GRO J0435+25... | EGRET | Average flux |
GRO J0516-512... | COMPTEL | Not detected during an observation in 1991 Jul/Aug. Interesting spectrum peaking in the few-MeV range |
GRO J1040+48... | COMPTEL | Also detected up to 3.0 MeV. Average flux quoted. Some sign of variability; |
GRO J1044-77... | EGRET | Average flux |
GRO J1214+06... | COMPTEL | Not detected at energies above and below this |
GRO J1753+57... | COMPTEL | Broken power law is a better fit. Not seen at other epochs |
GRO J1838-04... | EGRET | Not seen during many other observations |
GRO J1940-12... | EGRET | · · · |
GRO J2303+44... | EGRET | Average flux |
GRS 1227+025... | SIGMA | Variable by a factor of 2 |
GRO J2250-13... | EGRET | · · · |
GRO J2254-30... | EGRET | · · · |