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GCN Circular 34949

GRB 231104B: Fermi GBM Final Real-time Localization
2023-11-04T23:21:14Z (6 months ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 23:10:39 UT on 4 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231104B (trigger 720832244.521916 / 231104966).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 10.9, Dec = -41.8 (J2000 degrees, equivalent to J2000 00h 43m, -41d 47'), with a statistical uncertainty of 3.3 degrees.

The angle from the Fermi LAT boresight is 124.0 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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