GCN Circular 31763
Subject
GRB 220317A: Fermi GBM Final Real-time Localization
Date
2022-03-17T12:58:50Z (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 12:48:30 UT on 17 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220317A (trigger 669214115.664266 / 220317534).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 172.0, Dec = -11.3 (J2000 degrees, equivalent to J2000 11h 28m, -11d 18'), with a statistical uncertainty of 13.3 degrees.
The angle from the Fermi LAT boresight is 48.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220317534/quicklook/glg_skymap_all_bn220317534.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/bn220317534/quicklook/glg_healpix_all_bn220317534.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220317534/quicklook/glg_lc_medres34_bn220317534.gif