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GCN Circular 31155

Subject
GRB 211201A: Fermi GBM Final Real-time Localization
Date
2021-12-01T20:50:50Z (2 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 20:42:52 UT on 1 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211201A (trigger 660084177.881018 / 211201863).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 355.4, Dec = 2.6 (J2000 degrees, equivalent to J2000 23h 41m, 2d 36'), with a statistical uncertainty of 5.0 degrees.

The angle from the Fermi LAT boresight is 108.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211201863/quicklook/glg_skymap_all_bn211201863.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/bn211201863/quicklook/glg_healpix_all_bn211201863.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211201863/quicklook/glg_lc_medres34_bn211201863.gif
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