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GCN Circular 35129

GRB 231120A: Fermi GBM Final Real-time Localization
2023-11-20T00:32:39Z (8 months ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 00:23:08 UT on 20 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231120A (trigger 722132593.748426 / 231120016).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 50.7, Dec = 1.4 (J2000 degrees, equivalent to J2000 03h 22m, 1d 23'), with a statistical uncertainty of 18.2 degrees.

The angle from the Fermi LAT boresight is 73.0 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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