GCN Circular 35344
Subject
GRB 231215B: Fermi GBM Final Real-time Localization
Date
2023-12-15T09:57:45Z (a year ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB
At 09:47:17 UT on 15 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231215B (trigger 724326442.811262 / 231215408).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 11.1, Dec = 61.2 (J2000 degrees, equivalent to J2000 00h 44m, 61d 12'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 114.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231215408/quicklook/glg_skymap_all_bn231215408.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/bn231215408/quicklook/glg_healpix_all_bn231215408.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231215408/quicklook/glg_lc_medres34_bn231215408.gif