TITLE:   GCN CIRCULAR
NUMBER:  31532
SUBJECT: GRB 220131A: Fermi GBM Final Real-time Localization
DATE:    22/01/31 05:50:49 GMT
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 05:40:28 UT on 31 Jan 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220131A (trigger 665300433.513374 / 220131236).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 75.6, Dec = -24.9 (J2000 degrees, equivalent to J2000 05h 02m, -24d 53'), with a statistical uncertainty of 5.2 degrees.

The angle from the Fermi LAT boresight is 20.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220131236/quicklook/glg_skymap_all_bn220131236.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220131236/quicklook/glg_healpix_all_bn220131236.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220131236/quicklook/glg_lc_medres34_bn220131236.gif