GCN Circular 31509
Subject
GRB 220120A: Fermi GBM Final Localization
Date
2022-01-20T22:40:12Z (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 SHORT GRB
At 14:51:55.92 UT on 20 Jan 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220120A (trigger 664383120 / 220120619).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 249.7, Dec = -45.6 (J2000 degrees, equivalent to J2000 16h 38m, -45d 36'), with a statistical uncertainty of 8.4 degrees.
The angle from the Fermi LAT boresight is 74.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220120619/quicklook/glg_skymap_all_bn220120619.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/bn220120619/quicklook/glg_healpix_all_bn220120619.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220120619/quicklook/glg_lc_medres34_bn220120619.gif