GRB210812B

This page lists all entries on GRB210812B in GRBweb

Summary Fermi GBM GCN 30635 GCN 30638

Summary table
Variable Value Source
GRB_name_Fermi GRB210812011
T0 0:15:47.894 UTC Fermi_GBM
ra 183.6600° Fermi_GBM
decl 2.3700° Fermi_GBM
pos_error 4.98e+00° Fermi_GBM
T90 37.633 s Fermi_GBM
T90_error 1.81 s Fermi_GBM
T90_start 0:15:47.894 UTC Fermi_GBM
fluence 2.14e-06 erg/cm² Fermi_GBM
fluence_error 4.40e-08 erg/cm² Fermi_GBM
T100 37.633 s
GBM_located True
mjd 59438.01097099537 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB210812011
trigger_name bn210812011
ra 183.6600°
decl 2.3700°
pos_error 4.98e+00°
datum 2021-08-12
t_trigger 0:15:51.734 UTC
T90 37.633 s
T90_error 1.81 s
T90_start 0:15:47.894 UTC
fluence 2.14e-06 erg/cm²
fluence_error 4.40e-08 erg/cm²
flux_1024 3.41e+00 erg/cm²/s
flux_1024_error 2.46e-01 erg/cm²/s
flux_1024_time 1.98e+01 erg/cm²/s
flux_64 6.40e+00 erg/cm²/s
flux_64_error 1.35e+00 erg/cm²/s
GCN 30635 table
GRB_name GRB210812B
GCN_number 30635
Detection_method Fermi GBM final loc
t_trigger 0:15:51 UTC
ra 183.7000°
decl 2.4000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 30635 SUBJECT: GRB 210812B: Fermi GBM Final Real-time Localization DATE: 21/08/12 18:21:09 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 00:15:51 UT on 12 Aug 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210812B (trigger 650420156.733782 / 210812011). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 183.7, Dec = 2.4 (J2000 degrees, equivalent to J2000 12h 14m, 2d 23'), with a statistical uncertainty of 6.3 degrees. The angle from the Fermi LAT boresight is 29.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210812011/quicklook/glg_skymap_all_bn210812011.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210812011/quicklook/glg_healpix_all_bn210812011.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210812011/quicklook/glg_lc_medres34_bn210812011.gif
GCN 30638 table
GRB_name GRB210812B
GCN_number 30638
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 30638 SUBJECT: Retraction of Fermi GBM GCN 30630 and GCN 30632 DATE: 21/08/12 21:43:37 GMT FROM: Peter Veres at UAH The Fermi GBM Team reports: " Due to a data processing error, the names of two GRBs localized by Fermi GBM were incorrectly reported in GCN 30630 and GCN 30632. The error was corrected and the final real-time localizations of these GRBs were re-sent in two new GCNs. The correction for GCN 30630 was sent as GCN 30635 with the name GRB 210812B. The correction for GCN 30632 was sent as GCN 30633 with the name GRB 210812A. We apologize for any confusion this may have caused."