Astrophysico-Planetological Experiment (APEX) |
Phobos |
Jul 1988 - Mar 1989 |
(60-70 keV) to 9.3 MeV |
7-11σ count rate increase over expected levels during
a one-sixteenth, one-fourth or one second interval |
Burst and Transient Source Experiment (BATSE) |
Compton
Gamma-Ray Observatory (CGRO) |
Apr 1991 - Jun 2000 |
20 keV to 1 MeV |
Count rate with statistically significant increase above
backgroun in each of three time scales (64, 256 and 1024 ms) in
two detectors |
Compton Telescope (COMPTEL) |
Compton
Gamma-Ray Observatory (CGRO) |
Apr 1991 - Jun 2000 |
80 keV to 30 MeV |
|
French Gamma-ray Telescope (FREGATE) |
HETE-2 |
Oct 2000 - Present |
6 keV to 400 keV |
|
Gamma-Ray Burst Experiment (GRB) |
Ulysses |
Oct 1990 - Present |
15 keV to 150 keV |
Count rate in excess of 8σ above background |
Gamma-Ray Detector |
Defense Meteorological Satellites Program (DMSP) |
Jun 1987 -Present |
>50 keV |
Count rate in excess of 8σ above background |
Gamma Ray Detector |
Vela 5A
Vela 5B |
May 1969 - June 1979 |
150 keV to 750 keV |
Rapid rise in count rate to level significantly above the
background |
Gamma Ray Detector |
Vela 6A
Vela 6B |
Apr 1970 - mid-1979 |
300 keV to 1.5 MeV |
Rapid rise in count rate to level significantly above the
background |
Gamma Ray Experiment |
Helios 2 |
Jan 1976 - 1981 |
60 keV - 1.5 MeV |
Three command-adjustable trigger modes set in-flight at
levels in proportion to background levels |
Gamma Ray Spectrometer (GRS) |
Solar
Maximum Mission (SMM) |
Feb 1980 - Dec 1989 |
300 keV to 9 MeV |
|
Gamma Ray Spectrometer (GRS) |
Yohkoh |
Aug 1991 -Present (?) |
200 keV to 100 MeV |
|
Goddard Gamma-Ray Burst Spectrometer |
International Sun-Earth Explorer (ISEE) |
Aug 1978 - May 1997 |
200 keV to 3 MeV |
Rapid increase in count rate |
Konus |
Venera 11
Venera 12
Venera 13
Venera 14 |
Sep 1978 - Feb 1980
Sep 1978 - Apr 1980
Oct 1981 - Mar 1983
Nov 1981 - Mar 1983 |
20 keV to 8 MeV |
6σ rise in count rate over background in 50 to 200 keV
enrgy range |
Gamma-Ray Spectrometer (GRS) |
Mar Observer (MO) |
Sep 1992 - Aug 1993 |
500 keV to 2 MeV |
|
Phebus |
GRANAT |
Dec 1989 - Nov 1998 |
100 keV to 100 MeV |
8σ excess of pulses in the 0.1-1.6 MeV range over a
0.25 or 1 second integration time |
Orbiter Gamma Burst Detector |
Pioneer
Venus Orbiter (PVO) |
May 1978 - Oct 1992 |
100 keV to 2 MeV |
Statistically significant, rapid rise in detector counting
rate |
Sigma |
GRANAT |
Dec 1989 - Nov 1998 |
30 keV to 1.3 MeV |
Count rate averaged over either 0.25 or 2 seconds in either
the 40-90 keV or 90-750 keV band which exceeds the count rate
over the previous 64 seconds by 9σ |
Signe 2m |
Venera 11
Venera 12
Prognoz 7 |
Sep 1978 - Feb 1980
Sep 1978 - Apr 1980
Oct 1978 - Jun 1979 |
(50-270 keV) to (600-3000 keV) |
>8σ increase in count rate over normal in 250 ms
interval |
SNEG 2m3 |
Venera 13
Venera 14 |
Oct 1981 - Mar 1983
Nov 1981 - Mar 1983 |
50 keV to 800 keV |
6.5σ increase in count rate in less than 1 second;
σ is the dispersion of the averaged measured
background |
Wide Angle Telescope for Cosmic Hard X-rays (Watch) |
GRANAT
Eureca |
Dec 1989 - Nov 1998
Aug 1992 - Jul 1993 |
6 keV to 150 keV |
Count rate in excess of 6σ above the background in one
of 12 sampling times logarithmically distributed from 16 ms to
32 s |
Wide Field Camera |
BeppoSAX |
Apr 1996 - Apr 2002 |
2 keV to 30 keV |
|
SPectrometer on INTEGRAL (SPI) |
INTEGRAL |
Oct 2002 - Present |
20 keV to 8 MeV |
|
Imager on Board the Integral Satellite (IBIS) |
INTEGRAL |
Oct 2002 - Present |
15 keV to 10 MeV |
|