GCN Circular 38682
Subject
GRB 241228B: Fermi GBM Final Real-time Localization
Date
2024-12-28T04:23:41Z (8 days 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 04:13:05 UT on 28 Dec 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241228B (trigger 757051990.391412 / 241228176).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 122.2, Dec = 14.0 (J2000 degrees, equivalent to J2000 08h 08m, 14d 00'), with a statistical uncertainty of 1.7 degrees.
The angle from the Fermi LAT boresight is 49.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241228176/quicklook/glg_skymap_all_bn241228176.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241228176/quicklook/glg_healpix_all_bn241228176.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241228176/quicklook/glg_lc_medres34_bn241228176.gif