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GCN Circular 31201

Subject
GRB 211211A: Fermi GBM Final Real-time Localization
Date
2021-12-11T13:20:10Z (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 13:09:59 UT on 11 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211211A (trigger 660921004.65092 / 211211549).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 211.3, Dec = 27.1 (J2000 degrees, equivalent to J2000 14h 05m, 27d 06'), with a statistical uncertainty of 1.0 degrees.

The angle from the Fermi LAT boresight is 111.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211211549/quicklook/glg_skymap_all_bn211211549.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/bn211211549/quicklook/glg_healpix_all_bn211211549.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211211549/quicklook/glg_lc_medres34_bn211211549.gif
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