BATSE/GUSBAD ivo://nasa.heasarc/gusbad NASA/GSFC HEASARC Schmidt 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov GRB The GUSBAD (Gamma-ray bursts Uniformly Selected from BATSE Archival Data) Catalog is based on BATSE DISCLA data at a time resolution of 1.024 seconds for the full 9.1 years of the Compton Gamma-Ray Observatory (CGRO) mission from April 19, 1991 until May 26, 2000 (corresponding to Truncated Julian Dates from 8365 to 11690). This catalog lists over 2200 gamma-ray bursts (GRBs). Selection of GRBs for the GUSBAD Catalog requires a 5-sigma excess over the background in two of the BATSE detectors over the energy range 50-300 keV. The search covers the entire mission except when CGRO was over particular geographic regions or during one of 199,964 time windows when DISCLA data were missing or contaminated. The classification as GRB or non-GRB of the 6236 events that were produced by the software trigger was aided by correlating the times and positions of the events against the Current BATSE Burst Catalog. There are 589 GRBs in the GUSBAD Catalog that are not included in the Current BATSE Burst Catalog. The GUSBAD catalog is uniform in the sense that the detection criterion is the same throughout and that the properties given in the catalog are available for every burst. The detection and the derivation of the properties listed in the catalog were carried out automatically, except for some rare instances. This makes the catalog especially suitable for statistical work and simulations, such as used in the evaluation of V/Vmax. The procedure used to detect and classify the bursts has been described in Schmidt (2004). This database table was last updated by the HEASARC in April 2005 using the file GUSBADcat.dat containing version 2.1 of the catalog, which was obtained from the catalog author's web site at <a href="http://www.astro.caltech.edu/~mxs/grb/GUSBAD/">http://www.astro.caltech.edu/~mxs/grb/GUSBAD/</a> <p> Comments or questions about the contents of the GUSBAD Catalog are welcomed by the author who can be contacted at mxs@astro.caltech.edu. This is a service provided by NASA HEASARC . 2004ApJ...616.1072S https://heasarc.gsfc.nasa.gov/W3Browse/all/gusbad.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=gusbad& GET text/xml 180 99999 true 27 -89 5 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=gusbad GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_gusbad&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GAMMA-RAY BURSTS 5 Gamma-ray public gusbad GRBs Uniformly Selected from BATSE Archival Data (Version 2.1) name Gamma-Ray Burst Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable "time" Burst Trigger Time (UT) mjd time.epoch double nullable peak_flux Peak Flux (counts/cm^2/s) ct/cm^2/s phot.count;em double nullable fluence Fluence of Burst (counts/cm^2) ct/cm^2 phot.fluence;em.gamma.soft double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable altitude Altitude of the Burst (degrees) degree pos.az.alt short nullable num_int_trig Number of 1.024-s Intervals When Burst Exceeds Trigger Limit meta.number short nullable c_min Minimum Count Rate Needed for Trigger in Detector_2 (counts/s) ct/s instr.sensitivity double nullable hardness_ratio_2 Hardness Ratio 2: ch2/(ch2+ch3) phot.count;arith.ratio;em.gamma.soft double nullable hardness_ratio_1 Hardness Ratio 1: ch1/(ch2+ch3) phot.count;arith.ratio;em.gamma.soft double nullable num_int_pos Number of 1.024-s Intervals Used for the Position Derivation meta.number short nullable spectral_index Photon Spectral Index Corresponding to Count Ratio of Channel 3 to Channel 2 spect.index double nullable lii Galactic Longitude degree pos.galactic.lon double nullable azimuth Azimuth of the Burst (degrees) degree pos.az.azi short nullable bii Galactic Latitude degree pos.galactic.lat double nullable v_upon_vmax V/Vmax Value Based on Simulation double nullable pfar P-Number of the Final Burst Signal at the Detection Limit in V/Vmax Simulation short nullable angle_2 Angle between the Normal to Detector_2 and the GRB (degrees) degree instr.offset short nullable detector_2 Second Brightest Illuminated Detector meta.id;instr short nullable batse_altitude Altitude of the Burst in BATSE-based Coordinate System (degrees) degree pos.az.alt short nullable detector_1 Brightest Illuminated Detector meta.id;instr short nullable seconds_grb Trigger Seconds (UT) Since Beginning of Day s time.epoch int nullable day_grb Truncated Julian Date of Trigger TJD time.epoch int nullable ptop P-Number Corresponding to Maximum Burst Signal C_Max short nullable hardness_ratio_3 Hardness Ratio 3: ch3/(ch2+ch3) phot.count;arith.ratio;em.gamma.soft double nullable hardness_ratio_4 Hardness Ratio 4: ch4/(ch2+ch3) phot.count;arith.ratio;em.gamma.soft double nullable error_radius RMS Deviation from Mean of the Individual Positions (degrees) degree stat.error;pos short nullable angle_1 Angle between the Normal to Detector_1 and the GRB (degrees) degree instr.offset short nullable batse_azimuth Azimuth of the Burst in BATSE-based Coordinate System (degrees) degree pos.az.azi short nullable plast P-Number for the Last Burst Signal Exceeding the Trigger Limit short nullable c_max Maximum Count Rate for the Burst Signal in Detector_2 (counts/s) ct/s instr.sensitivity double nullable grb_class Flag Indicates Class of GRB meta.code;src.class char nullable