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GCN Circular 34883

Subject
GRB 231025A: Fermi GBM Final Localization
Date
2023-10-25T15:38:43Z (7 months ago)
From
Joe Mangan at IJCLab <joseph.mangan@ijclab.in2p3.fr>
Via
Web form
The Fermi GBM team reports the detection of a likely SHORT GRB

"At 06:46:59.59 UT on 25 October 2023, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 231025A (trigger 719909224/231025283).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 190.96, Dec = -53.08 (J2000 degrees, equivalent to J2000 12h 44m, -53d 05'),
with a statistical uncertainty of 16.32 degrees.

The angle from the Fermi LAT boresight is 113 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231025283/quicklook/glg_skymap_all_bn231025283.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231025283/quicklook/glg_healpix_all_bn231025283.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231025283/quicklook/glg_lc_medres34_bn231025283.gif"
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