GRBCAT ivo://nasa.heasarc/grbcat NASA/GSFC HEASARC Angelini et al. 2026-04-17 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov GRB This GRBs Catalog (GRBCAT) records high level information of the GRBs detected since their discovery in 1967. The catalog has been created using publications that report lists of GRB detections. These are mostly papers already published in refereed journals, unpublished papers, and PhD thesis presenting lists of GRBs. GRBCAT includes also compilation of bursts that were already present in the HEASARC database system. The catalog is organized with a main table reporting general information for each GRB and additional tables linked to the main table where specific information for the flux and the region of detection are reported. Afterglow measurements are also recorded in a separate table for all bursts detected after May 11 1996. The main table for each GRB contains an entry for each satellite that reports a detection with either a flux and/or position measurement. Therefore for a given GRB there are multiple records if the GRB was detected by more than one satellite. The associated flux table contains an entry for each flux and fluence values reported in literature for a given energy band. The positional information is reported via different tables each dedicated to a specific region of detection. The region descriptions are the following : circle, annulus, box, dual, annulus intersect, irregular, and intersect. The associated afterglow table contains position, intensity and redshift measurements taken after the discovery of the GRB. There are several records associated to a given GRB/afterglow since several observatories collected data on that position. The main table and the associated tables are updated when a new GRB and/or afterglow measurements are reported. This table was ingested by the HEASARC in June 2008 based on electronic versions obtained from the author(s), who compiled the catalog in 2005. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/grbcat.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=grbcat& GET text/xml 180 99999 true 76.94 -88.95 1 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=grbcat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_grbcat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GAMMA-RAY BURSTS 1 Gamma-ray public grbcat Catalog of Gamma-Ray Bursts name Burst Designation as GRB YYMMDD meta.id;meta.main char nullable "time" Time of Burst (UT) mjd time.start;obs double nullable observatory Detecting Observatory meta;instr.obsty;obs char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable coord_flag Quality Flag for RA and Dec meta.code;obs char nullable "region" Region char nullable afterglow_flag Afterglow Flag meta.code char nullable flux_flag Flux Flag meta.code;phot.flux char nullable id Sequential Identification Number for Each Source in Catalog meta.id;src int 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 t90 T_90 (s) s time.interval double nullable t50_error T_50 Error (s) s stat.error;time.interval double nullable time_def Definition of Burst Time meta.note;time.start;obs char nullable flux_notes Flux Notes meta.note char nullable t90_mod Modifier for t90 (<, >, ~, etc.) char nullable notes Notes meta.note char nullable alt_names Other Designations for Burst meta.id char nullable t_other A Different Duration Measure or duration not specified (s) s double nullable t90_error T_90 Error (s) s stat.error;time.interval double nullable record_number Sequential Identification Number for Each Entry in Catalog meta.id int nullable local_notes Localization Notes meta.note char nullable t90_range Energy Range for t90 (keV) char nullable t50_range Energy Range for t50 (keV) char nullable t90_emax Maximum of Energy Range for t90 (keV) keV short nullable t50 T_50 (s) s time.interval double nullable t90_emin Minimum of Energy Range for t90 (keV) keV short nullable reference Reference meta.ref;obs char nullable t50_mod Modifier for t50 (<, >, ~, etc.) char nullable t50_emin Minimum of Energy Range for t50 (keV) keV short nullable t50_emax Maximum of Energy Range for t50 (keV) keV short nullable class Browse Object Classification src.class short nullable