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GCN Circular 33775

GRB 230511D: Fermi GBM Final Real-time Localization
2023-05-11T22:50:51Z (a year ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely SHORT GRB

At 22:40:18 UT on 11 May 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230511D (trigger 705537623.19843 / 230511945).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 237.5, Dec = -17.4 (J2000 degrees, equivalent to J2000 15h 50m, -17d 23'), with a statistical uncertainty of 21.7 degrees.

The angle from the Fermi LAT boresight is 79.0 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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