GCN Circular 32512
Subject
GRB 220831C: Fermi GBM Final Localization
Date
2022-09-01T17:57:06Z (3 years ago)
From
Joshua Wood at MSFC/Fermi-GBM <joshua.r.wood@nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB
At 15:56:35.37 UT on 31 Aug 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220831C (trigger 683654200 / 220831664).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 337.0, Dec = -47.6 (J2000 degrees, equivalent to J2000 22h 28m, -47d 36'), with a statistical uncertainty of 8.6 degrees.
The angle from the Fermi LAT boresight is 69.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220831664/quicklook/glg_skymap_all_bn220831664.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/bn220831664/quicklook/glg_healpix_all_bn220831664.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220831664/quicklook/glg_lc_medres34_bn220831664.gif