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GCN Circular 31735

Subject
GRB 220310C: Fermi GBM Final Real-time Localization
Date
2022-03-10T22:34:09Z (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 22:23:51 UT on 10 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220310C (trigger 668643836.426778 / 220310933).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 290.7, Dec = 43.7 (J2000 degrees, equivalent to J2000 19h 22m, 43d 42'), with a statistical uncertainty of 5.4 degrees.

The angle from the Fermi LAT boresight is 27.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220310933/quicklook/glg_skymap_all_bn220310933.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/bn220310933/quicklook/glg_healpix_all_bn220310933.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220310933/quicklook/glg_lc_medres34_bn220310933.gif
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