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GCN Circular 35252

GRB 231203A: Fermi GBM Final Real-time Localization
2023-12-03T07:11:59Z (4 months ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 07:01:30 UT on 3 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231203A (trigger 723279695.772024 / 231203293).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 239.7, Dec = -49.8 (J2000 degrees, equivalent to J2000 15h 58m, -49d 47'), with a statistical uncertainty of 7.1 degrees.

The angle from the Fermi LAT boresight is 59.0 degrees.

The skymap can be found here:

The HEALPix FITS file, including the estimated localization systematic, can be found here:

The GBM light curve can be found here:

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