GRBCATAG ivo://nasa.heasarc/grbcatag NASA/GSFC HEASARC Angelini et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Optical Counterpart The GRB Afterglow table contains intensity and redshift measurements obtained with ground based telescopes or with space based observatories carried out after the detection of the GRBs. The catalog has been created using information from journal publications, IAU circulars, and GCN notices, and records afterglow measurements for bursts detected after May 1996. Each record within this catalog is dedicated to a specific measurement of an afterglow made with an observatory. Therefore for a given GRB, there are several entries reporting afterglow measurements from the different observatories. This catalog is linked to the main GRB catalog and it is 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/grbcatag.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=grbcatag& GET text/xml 180 99999 true 262.65 49.1 1 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=grbcatag GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_grbcatag&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GAMMA-RAY BURSTS 1 Gamma-ray public grbcatag Catalog of Gamma-Ray Bursts: Afterglows name Burst Designation as GRB YYMMDD meta.id;meta.main char nullable observatory Observatory meta;instr.obsty;obs char nullable band Band of Observation meta.code;phot.mag char nullable energy_range Energy Range of Observation (R-I-O-U-X-G) char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable obs_time Time of Observation (UT) mjd time.start;obs double nullable detected Was Afterglow Detected? meta.code char nullable intensity_mod Intensity Modifier char nullable intensity Intensity Observed double nullable intensity_units Units of Intensity char nullable redshift_mod Redshift Modifier char nullable redshift Measured Redshift src.redshift double nullable id Source ID Number 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 redshift_min Redshift Minimum src.redshift;stat.min double nullable telescope Observing Telescope meta;instr.tel;obs char nullable local_notes Localization Notes meta.note char nullable coord_flag Where the coordinates come from meta.code char nullable redshift_error Redshift Error stat.error;src.redshift char nullable intensity_error Intensity Error double nullable record_number Unique Identifier for Entry meta.record int nullable intensity_error_max Intensity Error Maximum double nullable intensity_error_min Intensity Error Minimum double nullable reference Reference for Observation meta.bib.bibcode char nullable notes Notes meta.note char nullable alt_names Other Names for Burst meta.id char nullable redshift_max Redshift Maximum src.redshift;stat.max double nullable