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SWIFTLSXPS - Swift-XRT Living Point Source Catalog (LSXPS) |
HEASARC Archive |
Overview
This is the Live Swift X-ray Point Source (LSXPS) catalog of detections by the Swift X-ray Telescope (XRT) used in Photon Counting (PC) mode in the 0.3-10 keV energy range. Swift is a NASA mission with international participation dedicated to studying gamma-ray bursts. It carries three instruments. The BAT is the large field-of-view instrument and operates in the 10-300 keV energy band; and two narrow field instruments, XRT and UVOT, that operate in the X-ray and UV/optical regime, respectively.This catalog is similar to the 2SXPS catalog (Evans, P. A., et al. 2020, ApJS, 247, 54) and uses an almost identical source detection process. The primary change is that this is a living catalog: it is updated in near-real time and transient searches are carried out on each dataset as it is received. The improved statistics (below) compared to 2SXPS for source detections, unique and variables sources, uncatalogued sources, and temporal and total sky area coverage are a function of its ongoing live nature, compared to the static 2SXPS which was current up to 2018-08-01. On average, LSXPS grows by 49 new sources and the unique sky coverage increases 0.94 square degrees per day.
Catalog Bibcode
2023MNRAS.518..174EBulletin
The SWIFTLSXPS database table was last updated on 1 May 2026.Note
The overall LSXPS catalog characteristics are as follows:
Data included 2005-01-01 - 2026-02-09 (415 Ms)
Sky coverage 5,842 deg2
Typical sensitivity (0.3-10 keV) 2 x 10-13 erg cm-2 s-1 (observations)
4 x 10-14 erg cm-2 s-1 (stacked images)
Typical position error 5.6" (90% confidence radius, including systematic errors)
Detections 2,877,245
Unique sources 353,343
Variable sources 151,494
Uncatalogued sources 136,402
False positive rate Flag=Good 0.3%
Flag=Good/Reasonable 1%
Flag=Good/Reasonable/Poor <10%
Description
The Swift XRT observations were filtered to remove times when: a) data were contaminated by scattered light from the daylight side of the Earth; b) the on-board astrometry derived from the images obtained by the Swift UV/Optical telescope was unreliable; and c) observations with less than 100s of PC mode. A Swift observation is a collection of snapshots and the source detection algorithm was run on individual observation as well as on stacked images. The latter were generated on a grid of 2,700 x 2,700 pixels (~ 106' x 106') to ensure that every overlap between observations is in at least one stacked image.Each record corresponds to a unique source which characteristics are described with 234 parameters. The catalog reports for each source rates in four energy band (0.3-10.keV, 0.3-1. keV, 1-2 keV and 3-10 keV), background rates, variability for each energy band, two hardness ratio, peak rate and several spectral parameters. The hardness ratios are defined as follows:
HR1 = (M-S)/(M+S) where M and S are the medium (1-2 keV) and soft (0.3-1 keV) band count rates HR2 = (H-M)/(H+M) where H and M are the hard (2-10 keV) and medium (1-2 keV) band count ratesand they are calculated using all observations.
The peak rate is determined using three different timescale: the count rate considering all the observations (see parameters rates in this database), the count rate in each observation (not reported in this database) and the count rate in each snapshot (not reported in this database). The peak rate is the rate +/- error from the timescale which has the highest 1-sigma lower-limit on the count rate.
Spectral parameters and source flux are estimated using three different methods for two spectral models, a power-law and APEC (see Smith et al., 2001, ApJL, 556, L91). Not all sources have values for all three methods. The parameters starting with "fix" are defined for every source and uses fixed spectral model parameters: a photon index of 1.7 for a power-law model, a temperature of kT=1keV for the APEC model and for both models uses the Galactic absorption listed in the parameter "nh". The parameters starting "intr" have been inferred from the hardness ratio. Look-up tables containing (HR1, HR2, NH, photon index) and (HR1, HR2, NH, kT) are pre-calculated for the power-law and APEC models. If the source HR1 and HR2 are close to the values in the table, spectral parameters are derived by interpolating the HR1 and HR2 in the look-up tables that are close to the HR1 and HR2 of the source. The parameters starting with "fit" have been derived from fitting an actual source spectrum in XSPEC and they are only available for the brightest sources (>50 net counts, and at least one detection in a single observation). The parameters fields starting with "pow" and "apec" report the values from the 'best' of these methods. The parameters "which_pow" and "which_apec" indicates which of the three methods are reported.
The catalog also includes flags derived from the cross-correlated with other source catalogs. The catalogs and their reference sources are as follows:
* ROSAT HRI: https://heasarc.gsfc.nasa.gov/docs/rosat/rra/RRA.html * SDSS Quasar Catalog DR14: Paris et al., 2018, A&A, 613, 51 (https://www.sdss.org/dr14/algorithms/qso_catalog/) * 2MASS: Skrutskie et al., 2006, AJ, 131, 1163 * 2CSC: accessed via the CSCView Tool at https://cxc.harvard.edu/csc/about.html (1CSC paper: Evans et al., 2010, ApJS, 189, 37) * 1SWXRT: Evans et al., 2014, ApJS, 210,8 * 2SXPS: Evans et al., 2020, ApJS, 227, 54 * 2RXS: Boller et al., 2016, A&A, 588, 103 * 4XMM-DR10: http://xmmssc.irap.omp.eu/Catalogue/4XMM-DR10/4XMM_DR10.html (4XMM paper: Webb et al., 2020, A&A, 641, A136) * 4XMM DR9 Stack: Traulsen et al., 2020, A&A, 641, A137 * SwiftFT: Puccetti et al. 2011, A&A, 528, A122 * XMM SL2: Saxton et al., 2008, A&A, 480, 611 * XRTGRB: Evans et al, 2009, MNRAS, 397, 1177 (https://www.swift.ac.uk/xrt_positions) * USNOB1: Monet et al., 2003, AJ, 125, 984The LSXPS paper (Evans et al. 2023 MNRAS, 518, 174) describes in detail the methodology of stacking images, background modeling, point spread function mapping, stray light detection and corrections, data filtering techniques and processing. The LSXPS catalog has a dedicated website at https://www.swift.ac.uk/LSXPS.
References
LSXPS: A Real-Time Transient Detector and Living Swift X-Ray Telescope Point-source Catalogue,
Evans, P.A. et al., Monthly Notices of the Royal Astronomical Society,
Volume 518, Issue 1, pp. 174 - 184 (2023).
=2023MNRAS.518..174E
Provenance
This table was added to the HEASARC database in June 2026 and is based on the contents of its dedicated website at https://www.swift.ac.uk/LSXPS. The version available from the HEASARC corresponds to the catalog designated as "Sources" on the Leicester website and will typically be updated at the HEASARC within a day or so of a new version appearing on the Leicester website.Parameters
Source_Number
A unique numerical identifier for each LSXPS source.
Name
Unique IAU format source name, of the form: LSXPS JHHMMSS.S+ddmmss.
RA
Right Ascension of the source, taken from the individual detection with the
highest S/N and best detection flag.
Dec
Declination of the source, taken from the individual detection with the
highest S/N and best detection flag.
LII
Galactic longitude in degrees of the best position of the source.
BII
Galactic latitude in degrees of the best position of the source.
Error_Radius
The 90% confidence radial position error on the source position, taken from
the same individual detection as the position. This includes the astrometric
systematic error.
Trackers_Flag
This flag indicates the provenance of the source's astrometry: 0 for Swift
star trackers, 1 for the 2MASS catalog.
Off_Axis
The mean distance angle (in arcminutes) of the source from the center of the
XRT detector averaged over all observations in which the source was detected
and inside the XRT field of view. There is a handful of sources for which
this value is -1. This indicates that the source center was never in the
field of view, that is, the detection and centroid was based on the wings of
the PSF that extended into the field of view while the source itself was
outside.
Ctrpart_Offset
The distance to the nearest LSXPS source to this one, in arcsec.
Ctrpart_Offset_Good
The distance to the nearest LSXPS source to this one, with a flag of 0 or 1,
i.e. Good or Reasonable with no other warning bit set; in arcsec.
Ctrpart_Source_ID
The source_number for the closest LSXPS source to this one.
Ctrpart_Good_Source_ID
The source_number for the closest LSXPS source to this one with a flag of
0 or 1 (i.e. Good or Reasonable with no other warning bit set).
Source_HEALPix
The Hierarchical Equal Area Isolatitude Pixel (HEALPix) containing the source
for a pixelation using NSIDE=128 RING ordering scheme.
Exposure
The total exposure at the location of the source in seconds, including
datasets in which the source was not detected.
Time
The UTC date and time of the start of the first observation in LSXPS which
covered the location of the source.
End_Time
The UTC date and time of the end of the last observation in LSXPS which
covered the location of the source.
Time_MET
The time of the start of the first observation in LSXPS which covered the
location of the source, in Swift MET (Mission Elapsed Time).
End_Time_MET
The time of the end of the last observation in LSXPS which covered the
location of the source, in Swift MET.
Time_Determine
The UTC date and time of the start of the first observation in LSXPS in which
the source count rate in any band is inconsistent with 0 at the 3-sigma
level; i.e. the first observation in which the source was detected by the
blind search or retrospective count-rate determination.
End_Time_Determine
The UTC date and time of the end of the last observation in LSXPS in which
the source count rate in any band is inconsistent with 0 at the 3-sigma
level; i.e. the first observation in which the source was detected by the
blind search or retrospective count-rate determination.
Time_Determine_MET
The time, in Swift MET, of the start of the first observation in LSXPS in
which the source count rate in any band is inconsistent with 0 at the 3-sigma
level; i.e. the first observation in which the source was detected by the
blind search or retrospective count-rate determination.
End_Time_Determine_MET
The time, in Swift MET, of the end of the last observation in LSXPS in which
the source count rate in any band is inconsistent with 0 at the 3-sigma
level; i.e. the first observation in which the source was detected by the
blind search or retrospective count-rate determination.
Time_Blind
The UTC date and time of the start of the first observation in LSXPS in which
the source was detected in the blind search.
End_Time_Blind
The UTC date and time of the end of the last observation in LSXPS in in which
the source was detected in the blind search.
Time_Blind_MET
The time, in Swift MET, of the start of the first observation in LSXPS in
which the source was detected in the blind search.
End_Time_Blind_MET
The time, in Swift MET, of the end of the last observation in LSXPS in which
the source was detected in the blind search.
Num_Obs
The total number of datasets (observations+stacked images) which cover the
location of the source, including those in which the source was not detected.
Num_Blind_Obs
The number of datasets (observations + stacked images) in which the source
was detected in the blind search.
Num_Determine_Obs
Total number of datasets (observations + stacked images) in which the source
was detected in the retrospective analysis.
Best_Detect_ID
The ID value from the detections table corresponding to the detection of this
source for which the position and error have been taken.
Rate_FB_Flag
Flag for the mean count rate in the total (0.3-10 keV) is non-zero with
3-sigma significance (0 = no; 1 = yes).
Rate_SB_Flag
Flag for the mean count rate in soft band (0.3-1 keV) is non-zero with
3-sigma significance (0 = no; 1 = yes).
Rate_MB_Flag
Flag for the mean count rate in medium band (1-2 keV) is non-zero with
3-sigma significance (0 = no; 1 = yes).
Rate_HB_Flag
Flag for the mean count rate in hard band (2-10 keV) is non-zero with 3-sigma
significance (0 = no; 1 = yes).
Detect_Flag
The best detection flag from all detections of the source. The basic values
are 0, 1, or 2, meaning Good, Reasonable or Poor respectively. Higher values
mean that an extra warning is associated with the source. This flag is
encoded in a bitwise fashion, as follows:
Bit Value Description 2 4 The source position is consistent with that of a known extended source. 3 8 The source is likely an alias of a badly-fitted piled up source. 4 16 The source lies in a region marked as contaminated during the visual screening.
Field_Flag
The best field flag from all detections of the source. This is a bitwise flag
with the following values:
Bit Value Description 0 1 Field contains stray light. 1 2 Field contains diffuse emission or artifacts. 2 4 Field contains stray light that could not be adequately modeled. 3 8 Field contains a bright, piled up source which was not properly fitted in some bands.
Det_FB_Flag
The best total band (0.3-10 keV) detection flag from all detections of the
source.
Det_SB_Flag
The best soft band (0.3-1 keV) detection flag from all detections of the
source.
Det_MB_Flag
The best medium band (1-2 keV) detection flag from all detections of the
source.
Det_HB_Flag
The best hard band (2-10 keV) detection flag from all detections of the
source.
Optical_Load
This is the worst optical loading warning from any detection of the source.
If an optical source exists near the LSXPS source, and is bright enough to
cause optical loading then this field indicates how many magnitudes brighter
than the optical loading limit that source is. Otherwise, it is zero.
Stray_Flag
This is set to one if any detections of the source occurred in a region
affected by stray light; otherwise, it is zero.
Bright_Flag
Whether any detection of this source occurred where the background level
exceeded 10-3 ct s-1 pixel-1, i.e. was likely in the wings of a bright
source. A value of zero indicates this did not occur. A value of one
indicates that it did. A value of two means that the source was detected in a
stacked image in which the background was not high (averaged over the whole
stacked exposure), but where there was at least one observation in which the
source was undetected, and the background at the source position was in
excess of 10-3 ct s-1 pixel-1.
Alias_Flag
Based on an inspection of the distribution of source separations in the
catalog, any sources which lie within 20" of each other and are not detected
in the same dataset, are considered possible aliases of each other. This
flag indicates if any such alias was found (0 for no, 1 for yes).
Date_Added
The date on which this source was added to the LSXPS catalog.
Current_Detect_Flag
This is set to one if the source was detected in the most recent observation
of its location, zero if it was not detected and there is no constraining
upper limit, and -1 if its upper limit is below the most recent detection
Process_Flag
A processing status flag.
Date_Modified
The data of the most recent analysis of this source.
Count_Rate_FB
The time-averaged total-band (0.3-10 keV) count rate of the source in counts
per second.
Count_Rate_FB_Pos_Err
The 1-sigma positive error on the time-averaged total-band (0.3-10 keV)
count rate of the source. If more than 100 net counts (i.e. after background
subtraction) were detected, or the number of counts in the source or
background exceeded 1000, this is the Poisson error; otherwise, it is
calculated from the Bayesian method of Kraft, Burrows & Nousek (1991).
Count_Rate_FB_Neg_Err
The 1-sigma negative error on the time-averaged total-band (0.3-10 keV)
count rate of the source. If more than 100 net counts (i.e. after background
subtraction) were detected, or the number of counts in the source or
background exceeded 1000, this is the Poisson error; otherwise, it is
calculated from the Bayesian method of Kraft, Burrows & Nousek (1991).
Hardness_Ratio_1
The HR1 hardness ratio = (M-S)/(M+S) where M and S are the medium (1-2 keV)
and soft (0.3-1 keV) band count rates. If both bands had more than 100
photons and an S/N ratio of at least 2 this was calculated simply from this
equation; otherwise, the Bayesian approach of Park et al. (2006) was employed.
Hardness_Ratio_1_Pos_Err
The 1-sigma positive error on HR1. In a small number of cases where the
Bayesian approach of Park et al. (2006) was used to derive HR1, the mean HR
value lay outside the 1-sigma confidence interval. In these cases the HR1_pos
error may be negative.
Hardness_Ratio_1_Neg_Err
The 1-sigma negative error on HR1. In a small number of cases where the
Bayesian approach of Park et al. (2006) was used to derive HR1, the mean HR
value lay outside the 1-sigma confidence interval. In these cases the HR1_neg
error may be positive.
Hardness_Ratio_2
The HR2 hardness ratio = (H-M)/(H+M) where H and M are the hard (2-10 keV)
and medium (1-2 keV) band count rates. If both bands had more than 100
photons and an SNR of at least 2 this was calculated simply from this
equation; otherwise, the Bayesian approach of Park et al. (2006) was employed.
Hardness_Ratio_2_Pos_Err
The 1-sigma positive error on HR2. In a small number of cases where the
Bayesian approach of Park et al. (2006) was used to derive HR2, the mean HR
value lay outside the 1-sigma confidence interval. In these cases the HR2_pos
error may be negative.
Hardness_Ratio_2_Neg_Err
The 1-sigma negative error on HR2. In a small number of cases where the
Bayesian approach of Park et al. (2006) was used to derive HR2, the mean HR
value lay outside the 1-sigma confidence interval. In these cases the HR2_neg
error may be positive.
Count_Rate_SB
The time-averaged soft-band (0.3-1 keV) count rate of the source, in counts
per second.
Count_Rate_SB_Pos_Err
The 1-sigma positive error on the time-averaged soft-band (0.3-1 keV)
count rate of the source.
Count_Rate_SB_Neg_Err
The 1-sigma negative error on the time-averaged soft-band (0.3-1 keV)
count rate of the source.
Count_Rate_MB
The time-averaged medium-band (1-2 keV) count rate of the source, in counts
per second.
Count_Rate_MB_Pos_Err
The 1-sigma positive error on the time-averaged medium-band (1-2 keV)
count rate of the source.
Count_Rate_MB_Neg_Err
The 1-sigma negative error on the time-averaged medium-band (1-2 keV) count
rate of the source.
Count_Rate_HB
The time-averaged hard-band (2-10 keV) count rate of the source, in counts
per second.
Count_Rate_HB_Pos_Err
The 1-sigma positive error on the time-averaged hard-band (2-10 keV) count
rate of the source.
Count_Rate_HB_Neg_Err
The 1-sigma negative error on the time-averaged hard-band (2-10 keV) count
rate of the source.
Count_FB
The total number of events (not background subtracted or exposure corrected)
in the total-band (0.3-10 keV) image, in the source extraction region for
this source. This is found by summing the counts in the individual
observations of the location, not from the stacked image.
Count_SB
The total number of events (not background subtracted or exposure corrected)
in the soft-band (0.3-1 keV) image, in the source extraction region for this
source.
Count_MB
The total number of events (not background subtracted or exposure corrected)
in the medium-band (1-2 keV) image, in the source extraction region for this
source.
Count_HB
The total number of events (not background subtracted or exposure corrected)
in the hard-band (2-10 keV) image, in the source extraction region for this
source.
Bkgcnt_FB
The sum of the background map counts in the total-band (0.3-10 keV) source
extraction region for this source. This is found by summing the maps in the
individual observations of the location, not from the stacked image.
Bkgcnt_SB
The sum of the background map counts in the soft-band (0.3-1 keV) image, in
the source extraction region for this source.
Bkgcnt_MB
The sum of the background map counts in the medium-band (1-2 keV) image, in
the source extraction region for this source.
Bkgcnt_HB
The sum of the background map counts in the hard-band (2-10 keV) image, in
the source extraction region for this source.
Ratecf_FB
The count rate correction factor in the total band (0.3-10 keV). This
corrects for vignetting, bad columns, pile-up and the finite radius within
which counts were extracted.
Ratecf_SB
The count rate correction factor in the soft band (0.3-1 keV).
Ratecf_MB
The count rate correction factor in the medium band (1-2 keV).
Ratecf_HB
The count rate correction factor in the hard band (2-10 keV).
Count_Rate_FB_Upper
The overall 3-sigma upper limit on the total-band (0.3-10 keV) count rate
from the source, derived from the count_fb, bkgcnt_fb, ratecf_fb and exposure
columns. If more than 100 net counts (i.e. after background subtraction) were
detected, or the number of counts in the source or background exceeded 1000,
this was determined using Poisson errors; otherwise, it is calculated from
the Bayesian method of Kraft, Burrows & Nousek (1991). Note that this upper
limit value is supplied for all sources, regardless of the strength of the
detection.
Count_Rate_SB_Upper
The overall 3-sigma upper limit on the soft band (0.3-1 keV) count rate.
Count_Rate_MB_Upper
The overall 3-sigma upper limit on the medium band (1-2 keV) count rate.
Count_Rate_HB_Upper
The overall 3-sigma upper limit on the hard band (2-10 keV) count rate.
Pkrate_FB
The peak count rate of the source in the total band (0.3-10 keV). The peak
rate is defined as the count rate in the light curve bin (from per-snapshot
or per-ObsID binning) with the highest 1-sigma lower limit.
Pkrate_FB_Pos_Err
The 1-sigma positive error on the peak total band (0.3-10 keV) count rate.
Pkrate_FB_Neg_Err
The 1-sigma negative error on the peak total band (0.3-10 keV) count rate.
Pkrate_SB
The peak count rate of the source in the soft band (0.3-1 keV).
Pkrate_SB_Pos_Err
The 1-sigma positive error on the peak soft band (0.3-1 keV) count rate.
Pkrate_SB_Neg_Err
The 1-sigma negative error on the peak soft band (0.3-1 keV) count rate.
Pkrate_MB
The peak count rate of the source in the medium band (1-2 keV).
Pkrate_MB_Pos_Err
The 1-sigma positive error on the peak medium band (1-2 keV) count rate.
Pkrate_MB_Neg_Err
The 1-sigma negative error on the peak medium band (1-2 keV) count rate.
Pkrate_HB
The peak count rate of the source in the hard band (2-10 keV).
Pkrate_HB_Pos_Err
The 1-sigma positive error on the peak hard band (2-10 keV) count rate.
Pkrate_HB_Neg_Err
The 1-sigma negative error on the peak hard band (2-10 keV) count rate.
NH
The Galactic absorption column density (in cm-2) in the direction of the
source, determined from Willingale et al. (2013).
Prbcnst_Snap_FB
The probability that the source is constant between snapshots in the total
band (0.3-10 keV), as derived from the Pearson's Chi2 test. The minimum
recordable value for this is 1.1x10-16 and values of 0 mean <1.1x10-16.
Prbcnst_Snap_SB
The probability that the source is constant between snapshots in the soft
band (0.3-1 keV), as derived from the Pearson's Chi2 test.
Prbcnst_Snap_MB
The probability that the source is constant between snapshots in the medium
band (1-2 keV), as derived from the Pearson's Chi2 test.
Prbcnst_Snap_HB
The probability that the source is constant between snapshots in the hard
band (2-10 keV), as derived from the Pearson's Chi2 test.
Prbcnst_Snap_HR_1
The probability that the source HR1 hardness ratio is constant between
snapshots, as derived from the Pearson's Chi2 test.
Prbcnst_Snap_HR_2
The probability that the source HR2 hardness ratio is constant between
snapshots, as derived from the Pearson's Chi2 test.
Prbcnst_FB
The probability that the source is constant between observations in the total
band (0.3-10 keV), as derived from the Pearson's Chi2 test.
Prbcnst_SB
The probability that the source is constant between observations in the soft
band (0.3-10 keV), as derived from the Pearson's Chi2 test.
Prbcnst_MB
The probability that the source is constant between observations in the
medium band (0.3-10 keV), as derived from the Pearson's Chi2 test.
Prbcnst_HB
The probability that the source is constant between observations in the hard
band (0.3-10 keV), as derived from the Pearson's Chi2 test.
Prbcnst_HR_1
Probability that the source HR1 hardness ratio is constant between
observations.
Prbcnst_HR_2
Probability that the source HR2 hardness ratio is constant between
observations.
Which_Pow
Flag to indicate which of the available estimates of the power-law spectral
and fluxes is given in the summary fields:
Value Source of spectral information 0 Fixed spectrum: power-law with Gamma=1.7 and NH is Galactic NH. 1 Power-law spectral values derived from the hardness ratios. 2 Power-law spectral values taken from a fit to a custom-built spectrum.
Which_APEC
Flag to indicate which of the available estimates of the APEC spectral and
fluxes is given in the summary fields:
Value Source of spectral information 0 Fixed spectrum: APEC with kT=1 keV and NH is Galactic NH. 1 APEC spectral values derived from the hardness ratios. 2 APEC spectral values taken from a fit to a custom-built spectrum.
Powcf_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from the power-law spectrum indicated by the which_pow field.
Powcf_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from the power-law spectrum indicated by the which_pow field.
Pow_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) derived from the power-law
spectrum indicated by the which_pow field. This is given by
rate_fb*powcf_flux_a.
Pow_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux for the power-law
spectrum indicated by the which_pow field. This is given by
rate_fb_pos_err*powcf_flux_a, therefore does not include uncertainties in the
spectral modeling.
Pow_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux for the power-law
spectrum indicated by the which_pow field. This is given by
rate_fb_err_neg*powcf_flux_a, therefore does not include uncertainties in the
spectral modeling.
Pow_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1), derived from the
power-law spectrum indicated by the which_pow field. This is given by
rate_fb*powcf_flux_b.
Pow_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux for the
power-law spectrum indicated by the which_pow field. This is given by
rate_fb_err_pos*powcf_flux_b, therefore does not include uncertainties in the
spectral modeling.
Pow_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux for the
power-law spectrum indicated by the which_pow field. This is given by
rate_fb_neg_err*powcf_flux_b, therefore does not include uncertainties in the
spectral modeling.
Apeccf_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2 ct-1)
derived the APEC spectrum indicated by the which_apec field.
Apeccf_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived the APEC spectrum indicated by the which_apec field.
APEC_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) derived from the APEC
spectrum indicated in the which_apec field. This is given by
rate_fb*apeccf_flux_a.
APEC_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux for the APEC
spectrum indicated by the which_apec field. This is given by
rate_fb_pos_err*apeccf_flux_a, therefore does not include uncertainties in
the spectral modeling.
APEC_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux for the APEC
spectrum indicated by the which_apec field. This is given by
rate_fb_neg_err*apeccf_flux_a, therefore does not include uncertainties in
the spectral modeling.
APEC_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1), derived from the APEC
spectrum indicated by the which_apec field. This is given by
rate_fb*apeccf_flux_b.
APEC_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux for the APEC
spectrum indicated by the which_apec field. This is given by
rate_fb_pos_err*apeccf_flux_b, therefore does not include uncertainties in
the spectral modeling.
APEC_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux for the APEC
spectrum indicated by the which_apec field. This is given by
rate_fb_neg_err*apeccf_flux_b, therefore does not include uncertainties in
the spectral modeling.
Pow_Pkflux_A
The peak observed 0.3-10 keV flux (in erg cm-2 s-1) for the power-law
spectrum indicated by the which_pow field. This is given by
pkrate_fb*powcf_flux_a.
Pow_Pkflux_A_Pos_Err
The 1-sigma positive error on the peak observed 0.3-10 keV flux for the
power-law spectrum indicated by the which_pow field. This is given by
pkrate_fb_pos_err*powcf_flux_a, so does not include uncertainties in the
spectral modeling.
Pow_Pkflux_A_Neg_Err
The 1-sigma negative error on the peak observed 0.3-10 keV flux for the
power-law spectrum indicated by the which_pow field. This is given by
pkrate_fb_neg_err*powcf_flux_a, therefore does not include uncertainties in
the spectral modeling.
Pow_Pkflux_B
The peak unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) for the power-law
spectrum indicated by the which_pow field. This is given by
pkrate_fb*powcf_flux_b.
Pow_Pkflux_B_Pos_Err
The 1-sigma positive error on the peak unabsorbed 0.3-10 keV flux for the
power-law spectrum indicated by the which_pow field. This is given by
pkrate_fb_pos_err*powcf_flux_b, therefore does not include uncertainties in
the spectral modeling.
Pow_Pkflux_B_Neg_Err
The 1-sigma negative error on the peak unabsorbed 0.3-10 keV flux for the
power-law spectrum indicated by the which_pow field. This is given by
pkrate_fb_neg_err*powcf_flux_b, therefore does not include uncertainties in
the spectral modeling.
APEC_Pkflux_A
The peak observed 0.3-10 keV flux (in erg cm-2 s-1) for the APEC spectrum
indicated by the which_apec field. This is given by pkrate_fb*apeccf_flux_a.
APEC_Pkflux_A_Pos_Err
The 1-sigma positive error on the peak observed 0.3-10 keV flux for the APEC
spectrum indicated by the which_apec field. This is given by
pkrate_fb_pos_err*apeccf_flux_a, therefore does not include uncertainties in
the spectral modeling.
APEC_Pkflux_A_Neg_Err
The 1-sigma negative error on the peak observed 0.3-10 keV flux for the APEC
spectrum indicated by the which_apec field. This is given by
pkrate_fb_neg_err*apeccf_flux_a, therefore does not include uncertainties in
the spectral modeling.
APEC_Pkflux_B
The peak unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) for the APEC
spectrum indicated by the which_apex field. This is given by
pkrate_fb*apeccf_flux_b.
APEC_Pkflux_B_Pos_Err
The 1-sigma positive error on the peak unabsorbed 0.3-10 keV flux for the
APEC spectrum indicated by the which_apec field. This is given by
pkrate_fb_pos_err*apeccf_flux_b, therefore does not include uncertainties in
the spectral modeling.
APEC_Pkflux_B_Neg_Err
The 1-sigma negative error on the peak unabsorbed 0.3-10 keV flux for the
APEC spectrum indicated by the which_apec field. This is given by
pkrate_fb_neg_err*apeccf_flux_b, so does not include uncertainties in the
spectral modeling.
Fix_Powcf_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from a power-law spectrum with a photon index of 1.7 absorbed
by the Galactic column (from the nh field).
Fix_Powcf_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from a power-law spectrum with a photon index of 1.7 absorbed
by the Galactic column (from the nh field).
Fix_Pow_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) derived from a power-law
spectrum with a photon index of 1.7 absorbed by the Galactic column (from the
nh field). This is given by rate_fb*fix_powcf_flux_a.
Fix_Pow_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux for a power-law
spectrum with a photon index of 1.7 absorbed by the Galactic column (from the
nh field). This is given by rate_fb_pos_err*fix_powcf_flux_a, therefore does
not include uncertainties in the spectral modeling.
Fix_Pow_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux for a power-law
spectrum with a photon index of 1.7 absorbed by the Galactic column (from the
nh field). This is given by rate_fb_neg_err*fix_powcf_flux_a, so does not
include uncertainties in the spectral modeling.
Fix_Pow_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) derived from a power-law
spectrum with a photon index of 1.7 absorbed by the Galactic column (from the
nh field). This is given by rate_fb*fix_powcf_flux_b.
Fix_Pow_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux for a power-law
spectrum with a photon index of 1.7 absorbed by the Galactic column (from the
nh field). This is given by rate_fb_pos_err*fix_powcf_flux_b, therefore does
not include uncertainties in the spectral modeling.
Fix_Pow_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux for a power-law
spectrum with a photon index of 1.7 absorbed by the Galactic column (from the
nh field). This is given by rate_fb_neg_err*fix_powcf_flux_b, therefore does
not include uncertainties in the spectral modeling.
Fix_APECCF_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from an APEC spectrum with a temperature of 1 keV absorbed by
the Galactic column (from the nh field).
Fix_APECCF_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from an APEC spectrum with a temperature of 1 keV absorbed by
the Galactic column (from the nh field).
Fix_APEC_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) derived from an APEC
spectrum with a temperature of 1 keV absorbed by the Galactic column (from
the nh field). This is given by rate_fb*fix_apeccf_flux_a.
Fix_APEC_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux for an APEC
spectrum with a temperature of 1 keV absorbed by the Galactic column (from
the nh field). This is given by rate_fb_pos_err*fix_apeccf_flux_a, therefore
does not include uncertainties in the spectral modeling.
Fix_APEC_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux for an APEC
spectrum with a temperature of 1 keV absorbed by the Galactic column (from
the nh field). This is given by rate_fb_error_neg*fix_apeccf_flux_a,
therefore does not include uncertainties in the spectral modeling.
Fix_APEC_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) derived from an APEC
spectrum with a temperature of 1 keV absorbed by the Galactic column (from
the nh field). This is given by rate_fb*fix_apeccf_flux_b.
Fix_APEC_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux for an APEC
spectrum with a temperature of 1 keV absorbed by the Galactic column (from
the nh field). This is given by rate_fb_pos_err*fix_apeccf_flux_b, therefore
does not include uncertainties in the spectral modeling.
Fix_APEC_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux for an APEC
spectrum with a temperature of 1 keV absorbed by the Galactic column (from
the nh field). This is given by rate_fb_neg_err*fix_apeccf_flux_b, therefore
does not include uncertainties in the spectral modeling.
Intr_Powcf_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from the hardness ratios of the source interpolated on a
look-up table of power-law spectra.
Intr_Powcf_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from the hardness ratios of the source interpolated on a
look-up table of power-law spectra.
Intr_Pow_NH
The absorption column (in cm-2) of the spectrum of the source derived from
the hardness ratios of the source interpolated on a look-up table of
power-law spectra.
Intr_Pow_NH_Pos_Err
The 1-sigma positive error absorption column of the spectrum of the source
derived from the hardness ratios of the source interpolated on a look-up
table of power-law spectra. A value of -1 indicates that this error could not
be constrained.
Intr_Pow_NH_Neg_Err
The 1-sigma negative error absorption column of the spectrum of the source
derived from the hardness ratios of the source interpolated on a look-up
table of power-law spectra. A value of +1 indicates that this error could not
be constrained.
Intr_Pow_Gam
The power-law photon index of the spectrum of the source derived from the
hardness ratios of the source interpolated on a look-up table of power-law
spectra.
Intr_Pow_Gam_Pos_Err
The 1-sigma positive error on the power-law photon index of the spectrum of
the source derived from the hardness ratios of the source interpolated on a
look-up table of power-law spectra. A value of -1 indicates that this error
could not be constrained.
Intr_Pow_Gam_Neg_Err
The 1-sigma negative error on the power-law photon index of the spectrum of
the source derived from the hardness ratios of the source interpolated on a
look-up table of power-law spectra. A value of +1 indicates that this error
could not be constrained.
Intr_Pow_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) based on the
HR-interpolated power-law spectrum. This is given by
rate_fb*intr_powcf_flux_a.
Intr_Pow_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux derived based on
the HR-interpolated power-law spectrum. This is given by
rate_fb_pos_err*intr_powcf_flux_a, therefore does not include uncertainties
in the spectral modeling.
Intr_Pow_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux derived based on
the HR-interpolated power-law spectrum. This is given by
rate_fb_neg_err*intr_powcf_flux_a, therefore does not include uncertainties
in the spectral modeling.
Intr_Pow_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) based on the
HR-interpolated power-law spectrum. This is given by
rate_fb*intr_powcf_flux_b.
Intr_Pow_Flux_B_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux derived based on
the HR-interpolated power-law spectrum. This is given by
rate_fb_pos_err*intr_powcf_flux_b, therefore does not include uncertainties
in the spectral modeling.
Intr_Pow_Flux_B_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux derived based on
the HR-interpolated power-law spectrum. This is given by
rate_fb_neg_err*intr_powcf_flux_b, therefore does not include uncertainties
in the spectral modeling.
Intr_APECCF_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from the hardness ratios of the source interpolated on a
look-up table of APEC spectra.
Intr_APECCF_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from the hardness ratios of the source interpolated on a
look-up table of APEC spectra.
Intr_APEC_NH
The absorption column (in cm-2) of the spectrum of the source derived from
the hardness ratios of the source interpolated on a look-up table of APEC
spectra.
Intr_APEC_NH_Pos_Err
The 1-sigma positive error absorption column of the spectrum of the source
derived from the hardness ratios of the source interpolated on a look-up
table of APEC spectra. A value of -1 indicates that this error could not be
constrained.
Intr_APEC_NH_Neg_Err
The 1-sigma negative error absorption column of the spectrum of the source
derived from the hardness ratios of the source interpolated on a look-up
table of APEC spectra. A value of +1 indicates that this error could not be
constrained.
Intr_APEC_kT
The APEC plasma temperature (in keV) of the spectrum of the source derived
from the hardness ratios of the source interpolated on a look-up table of
APEC spectra.
Intr_APEC_kT_Pos_Err
The 1-sigma positive error on the APEC plasma temperature of the spectrum of
the source derived from the hardness ratios of the source interpolated on a
look-up table of APEC spectra. A value of -1 indicates that this error could
not be constrained.
Intr_APEC_kT_Neg_Err
The 1-sigma negative error on the APEC plasma temperature of the spectrum of
the source derived from the hardness ratios of the source interpolated on a
look-up table of APEC spectra. A value of +1 indicates that this error could
not be constrained.
Intr_APEC_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) based on the
HR-interpolated APEC spectrum. This is given by rate_fb*intr_apeccf_flux_a.
Intr_APEC_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux derived based on
the HR-interpolated APEC spectrum. This is given by
rate_fb_pos_err*intr_apeccf_flux_a, so does not include uncertainties in the
spectral modeling.
Intr_APEC_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux derived based on
the HR-interpolated APEC spectrum. This is given by
rate_fb_neg_err*intr_apeccf_flux_a, therefore does not include uncertainties
in the spectral modeling.
Intr_APEC_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) based on the
HR-interpolated APEC spectrum. This is given by rate_fb*intr_apeccf_flux_b.
Intr_APEC_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux derived based on
the HR-interpolated APEC spectrum. This is given by
rate_fb_pos_err*intr_apeccf_flux_b, therefore does not include uncertainties
in the spectral modeling.
Intr_APEC_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux derived based on
the HR-interpolated APEC spectrum. This is given by
rate_fb_neg_err*intr_apeccf_flux_b, therefore does not include uncertainties
in the spectral modeling.
Prob_Pow
If the (HR1,HR2) values of the source lie inside the range allowed by the
simple power-law spectrum, this field is 1. Otherwise, it is the probability
of obtaining the measured hardness ratios and errors if the true spectrum is
that which gives (HR1,HR2) closest to the source's values.
Prob_APEC
If the (HR1,HR2) values of the source lie inside the range allowed by the
simple APEC spectrum, this field is 1. Otherwise, it is the probability of
obtaining the measured hardness ratios and errors if the true spectrum is
that which gives (HR1,HR2) closest to the source's values.
Fit_Powcf_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from an automated power-law spectral fit to an
automatically-extracted spectrum of the source.
Fit_Powcf_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor (in erg cm-2
ct-1) derived from an automated power-law spectral fit to an
automatically-extracted spectrum of the source.
Fit_Pow_NH
The absorption column (in cm-2) of the spectrum of the source from an
automated power-law spectral fit to an automatically-extracted spectrum of
the source.
Fit_Pow_NH_Pos_Err
The 1-sigma positive error absorption column of the spectrum of the source
from an automated power-law spectral fit to an automatically-extracted
spectrum of the source.
Fit_Pow_NH_Neg_Err
The 1-sigma negative error absorption column of the spectrum of the source
from an automated power-law spectral fit to an automatically-extracted
spectrum of the source.
Fit_Pow_Gam
The power-law photon index of the spectrum of the source from an automated
power-law spectral fit to an automatically-extracted spectrum of the source.
Fit_Pow_Gam_Pos_Err
The 1-sigma positive error on the power-law photon index of the spectrum of
the source from an automated power-law spectral fit to an
automatically-extracted spectrum of the source.
Fit_Pow_Gam_Neg_Err
The 1-sigma negative error on the power-law photon index of the spectrum of
the source from an automated power-law spectral fit to an
automatically-extracted spectrum of the source.
Fit_Pow_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) derived from an automated
power-law spectral fit to an automatically-extracted spectrum of the source.
This is given by rate_fb*fit_powcf_flux_a.
Fit_Pow_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux derived from an
automated power-law spectral fit to an automatically-extracted spectrum of
the source. This is given by rate_fb_pos_err*fit_powcf_flux_a, therefore does
not include uncertainties in the spectral modeling.
Fit_Pow_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux derived from an
automated power-law spectral fit to an automatically-extracted spectrum of
the source. This is given by rate_fb_neg_err*fit_powcf_flux_a, therefore does
not include uncertainties in the spectral modeling.
Fit_Pow_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) derived from an
automated power-law spectral fit to an automatically-extracted spectrum of
the source. This is given by rate_fb*fit_powcf_flux_a.
Fit_Pow_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux derived from an
automated power-law spectral fit to an automatically-extracted spectrum of
the source. This is given by rate_fb_pos_err*fit_powcf_flux_b, therefore does
not include uncertainties in the spectral modeling.
Fit_Pow_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux derived from an
automated power-law spectral fit to an automatically-extracted spectrum of
the source. This is given by rate_fb_neg_err*fit_powcf_flux_b, therefore does
not include uncertainties in the spectral modeling.
Fit_Pow_Cstat
The C statistic from the power-law spectral fit.
Fit_Pow_DoF
The number of degrees of freedom in the power-law spectral fit.
Fit_Pow_Chisq
The Churazov-weighted chi-squared value of the best fitting power-law
spectral model.
Fit_APECCF_Flux_A
The counts-to-observed-flux (0.3-10 keV) conversion factor derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source.
Fit_APECCF_Flux_B
The counts-to-unabsorbed-flux (0.3-10 keV) conversion factor derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source.
Fit_APEC_NH
The absorption column (in cm-2) of the spectrum of the source derived from
an automated APEC spectral fit to an automatically-extracted spectrum of the
source.
Fit_APEC_NH_Pos_Err
The 1-sigma positive error absorption column of the spectrum of the source
derived from an automated APEC spectral fit to an automatically-extracted
spectrum of the source.
Fit_APEC_NH_Neg_Err
The 1-sigma negative error absorption column of the spectrum of the source
derived from an automated APEC spectral fit to an automatically-extracted
spectrum of the source.
Fit_APEC_kT
The APEC plasma temperature (in keV) of the spectrum of the source derived
from an automated APEC spectral fit to an automatically-extracted spectrum of
the source.
Fit_APEC_kT_Pos_Err
The 1-sigma positive error on the APEC plasma temperature of the spectrum of
the source derived from an automated APEC spectral fit to an
automatically-extracted spectrum of the source.
Fit_APEC_kT_Neg_Err
The 1-sigma negative error on the APEC plasma temperature of the spectrum of
the source derived from an automated APEC spectral fit to an
automatically-extracted spectrum of the source.
Fit_APEC_Flux_A
The observed 0.3-10 keV flux (in erg cm-2 s-1) derived from an automated
APEC spectral fit to an automatically-extracted spectrum of the source. This
is given by rate_fb*fit_apeccf_flux_a.
Fit_APEC_Flux_A_Pos_Err
The 1-sigma positive error on the observed 0.3-10 keV flux derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source. This is given by rate_fb_pos_err*fit_apeccf_flux_a, so does not
include uncertainties in the spectral modeling.
Fit_APEC_Flux_A_Neg_Err
The 1-sigma negative error on the observed 0.3-10 keV flux derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source. This is given by rate_fb_neg_err*fit_apeccf_flux_a, so does not
include uncertainties in the spectral modeling.
Fit_APEC_Flux_B
The unabsorbed 0.3-10 keV flux (in erg cm-2 s-1) derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source. This is given by rate_fb*fit_apeccf_flux_b.
Fit_APEC_Flux_B_Pos_Err
The 1-sigma positive error on the unabsorbed 0.3-10 keV flux derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source. This is given by rate_fb_pos_err*fit_apeccf_flux_b, so does not
include uncertainties in the spectral modeling.
Fit_APEC_Flux_B_Neg_Err
The 1-sigma negative error on the unabsorbed 0.3-10 keV flux derived from an
automated APEC spectral fit to an automatically-extracted spectrum of the
source. This is given by rate_fb_neg_err*fit_apeccf_flux_b, so does not
include uncertainties in the spectral modeling.
Fit_APEC_Cstat
The C statistic from the APEC spectral fit.
Fit_APEC_DoF
The degrees of freedom in the APEC spectral fit.
Fit_APEC_Chisq
The Churazov-weighted Chi2 value of the best fitting APEC spectral fit.
Spec_Flag
Flag for whether there is an automatically-built spectrum for this source (1
= yes, 0 = no).
Num_Matches
The number of sources in the external catalogs against which
cross-correlations were performed and agree at the 3-sigma level.
Num_Matches_Reduced
The number of sources in the external catalogs against which
cross-correlations were performed and agree at the 3-sigma level, excluding
2MASS, USNO-B1 and AllWISE.
Cat_ROSHRI_Flag
Flag to indicate whether the source matches an object in the ROSAT HRI
catalog (1 = yes, 0 = no).
Cat_2RXS_Flag
Flag to indicate whether the source matches an object in the 2RXS catalog (1
= yes, 0 = no).
Cat_XMMSSC_Flag
Flag to indicate whether the source matches an object in the 4XMM-DR10
catalog (1 = yes, 0 = no).
Cat_XMMStack_Flag
Flag to indicate whether the source matches an object in the 4XMM-DR9s
(stacked sources) catalog (1 = yes, 0 = no).
Cat_XMMSL2_Flag
Flag to indicate whether the source matches an object in the XMMSL2 catalog
(1 = yes, 0 = no).
Cat_SwiftFT_Flag
Flag to indicate whether the source matches an object in the SwiftFT catalog
(1 = yes, 0 = no).
Cat_1SWXRT_Flag
Flag to indicate whether the source matches an object in the 1SWXRT catalog
(1 = yes, 0 = no).
Cat_XRTGRB_Flag
Flag to indicate whether the source matches a cataloged XRT position of a
Gamma Ray Burst (1 = yes, 0 = no).
Cat_SDSSQSO_Flag
Flag to indicate whether the source matches an object in the SDSS QSO DR14 (1
= yes, 0 = no).
Cat_2MASS_Flag
Flag to indicate whether the source matches a 2MASS object (1 = yes, 0 = no).
Cat_USNOB1_Flag
Flag to indicate whether the source matches a USNO-B1 source (1 = yes, 0 = no).
Cat_2CSC_Flag
Flag to indicate whether the source matches an object in the 2CSC (Chandra)
catalog (1 = yes, 0 = no).
Cat_2SXPS_Flag
Flag to indicate whether the source matches an object in the 2SXPS catalog (1
= yes, 0 = no).
Contact Person
Questions regarding the SWIFTLSXPS database table can be addressed to the HEASARC Help Desk.Page Author: Browse Software Development Team
Last Modified: Thursday, 11-Jun-2026 16:58:33 EDT
- HEASARC Director: Vacant
- NASA Official: Ryan Smallcomb
- Web Curator: J.D. Myers
- Last Modified: 11-Jun-2026