TITLE: GCN CIRCULAR NUMBER: 38474 SUBJECT: GRB 241209A: Fermi GBM Final Real-time Localization DATE: 24/12/09 05:46:17 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM do_not_reply@GIOC.nsstc.nasa.gov
The Fermi GBM team reports the detection of a likely SHORT GRB
At 05:35:44 UT on 9 Dec 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241209A (trigger 755415349.162358 / 241209233).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 155.1, Dec = 10.2 (J2000 degrees, equivalent to J2000 10h 20m, 10d 11'), with a statistical uncertainty of 12.8 degrees.
The angle from the Fermi LAT boresight is 77.0 degrees.
The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241209233/q...
The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241209233/q...
The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241209233/q...
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