GCN Circular 31640
Subject
GRB 220223A: Fermi GBM Final Real-time Localization
Date
2022-02-23T02:25:39Z (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 02:15:16 UT on 23 Feb 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220223A (trigger 667275321.995302 / 220223094).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 26.2, Dec = -20.2 (J2000 degrees, equivalent to J2000 01h 44m, -20d 11'), with a statistical uncertainty of 14.6 degrees.
The angle from the Fermi LAT boresight is 52.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220223094/quicklook/glg_skymap_all_bn220223094.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/bn220223094/quicklook/glg_healpix_all_bn220223094.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220223094/quicklook/glg_lc_medres34_bn220223094.gif