GCN Circular 31636
Subject
GRB 220222B: Fermi GBM Final Real-time Localization
Date
2022-02-22T19:34:26Z (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 19:24:07 UT on 22 Feb 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220222B (trigger 667250652.136138 / 220222808).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 191.1, Dec = -33.5 (J2000 degrees, equivalent to J2000 12h 44m, -33d 30'), with a statistical uncertainty of 8.2 degrees.
The angle from the Fermi LAT boresight is 109.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220222808/quicklook/glg_skymap_all_bn220222808.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/bn220222808/quicklook/glg_healpix_all_bn220222808.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220222808/quicklook/glg_lc_medres34_bn220222808.gif