GRBCATANN ivo://nasa.heasarc/grbcatann NASA/GSFC HEASARC Angelini et al. 2026-04-17 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov GRB This table is an associated to the GRBs Catalog and lists the parameters that define the localization region if the region is an annulus. For a given GRB the localization can be provided by different observatories with different region types or by the same region type with different parameters. The different region types reported in literature are the following: circle, annulus, box, dual, annulus intersect, irregular, and intersect. This table contains the description only for the annulus region type, the other types are stored in separate tables. The annulus region is described by a center given in RA and Dec, the radius of the annulus (corresponding to the center betewen the inner and outer radii) and by the half-width of the annulus. The measurements are reported as found in literature and any differences or remarks are included in one of the table parameter (local_notes). The literature references are provided in the GRBs Catalog main table which is linked to this region table. 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/grbcatann.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=grbcatann GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_grbcatann&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GAMMA-RAY BURSTS 0.0166666666666667 Gamma-ray public grbcatann Catalog of Gamma-Ray Bursts: Annulus Regions name Burst Designation as GRB YYMMDD meta.id;meta.main char nullable annulus_ra Right Ascension of Center of Annulus degree pos.eq.ra;meta.main double nullable annulus_dec Declination of Center of Annulus degree pos.eq.dec;meta.main double nullable annulus_radius Annulus Radius (Degrees) degree phys.size.radius double nullable annulus_hw Annulus Radius Half-Width (Degrees) degree double nullable local_notes Localization Notes meta.note char nullable id Source ID Number meta.id int nullable "__row" System index column char nullable record_number Unique Identifier for Entry meta.id int nullable