GCN Circular 38488
Subject
GRB 241209D: Fermi GBM Final Real-time Localization
Date
2024-12-09T11:10:17Z (a month 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 10:59:44 UT on 9 Dec 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241209D (trigger 755434789.093062 / 241209458).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 191.7, Dec = -2.2 (J2000 degrees, equivalent to J2000 12h 46m, -2d 12'), with a statistical uncertainty of 1.9 degrees.
The angle from the Fermi LAT boresight is 80.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241209458/quicklook/glg_skymap_all_bn241209458.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/bn241209458/quicklook/glg_healpix_all_bn241209458.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241209458/quicklook/glg_lc_medres34_bn241209458.gif