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GCN Circular 33682

GRB 230425A: Fermi GBM Final Real-time Localization
2023-04-25T14:30:19Z (a year ago)
Joe Mangan at IJCLab <>
The Fermi GBM team reports the detection of a likely SHORT GRB

At 05:30:39 UT on 25 Apr 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230425A (trigger 704093444 / 230425230).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 150.7 Dec = -33.9 (J2000 degrees, equivalent to J2000 10h 02m, 33d 54'), with a statistical uncertainty of 11.5 degrees.

The angle from the Fermi LAT boresight is 74 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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