GCN Circular 29394
Subject
GRB 210204B: Fermi GBM Final Real-time Localization
Date
2021-02-04T18:49:19Z (3 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB
At 18:38:59 UT on 4 Feb 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210204B (trigger 634156744.570034 / 210204777).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 272.5, Dec = -54.8 (J2000 degrees, equivalent to J2000 18h 10m, -54d 47'), with a statistical uncertainty of 2.4 degrees.
The angle from the Fermi LAT boresight is 40.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210204777/quicklook/glg_skymap_all_bn210204777.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/bn210204777/quicklook/glg_healpix_all_bn210204777.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210204777/quicklook/glg_lc_medres34_bn210204777.gif