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GCN Circular 35608

GRB 240123B: Fermi GBM Final Real-time Localization
2024-01-23T17:58:30Z (5 months ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 17:48:03 UT on 23 Jan 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240123B (trigger 727724888.218344 / 240123742).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 312.7, Dec = 17.3 (J2000 degrees, equivalent to J2000 20h 50m, 17d 18'), with a statistical uncertainty of 6.9 degrees.

The angle from the Fermi LAT boresight is 51.0 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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