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GCN Circular 32826

Subject
GRB 221023A: Fermi GBM Final Localization
Date
2022-10-24T13:22:51Z (a year ago)
From
Rachel Dunwoody at UCD <rachel.dunwoody@ucdconnect.ie>
The Fermi GBM team reports the detection of a likely long GRB

At 20:41:34.92 UT on 23 October 2022, the Fermi Gamma-ray Burst Monitor
(GBM) triggered and located GRB 221023A (trigger 688250499 / 221023862).

The on-ground calculated location, using the Fermi GBM trigger data, is RA
= 232.3, Dec = 11.8 (J2000 degrees, equivalent to J2000 15h 29m, 11d 48'),
with a statistical uncertainty of 1 degree.

The angle from the Fermi LAT boresight is 52 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221023862/quicklook/glg_skymap_all_221023862.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/bn221023862/quicklook/glg_healpix_all_bn221023862.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221023862/quicklook/glg_lc_medres34_bn221023862.gif
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