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GCN Circular 33767

GRB 230511A: Fermi GBM Final Real-time Localization
2023-05-11T11:25:42Z (a year ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 11:15:05 UT on 11 May 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230511A (trigger 705496510.691274 / 230511469).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 145.0, Dec = 1.7 (J2000 degrees, equivalent to J2000 09h 39m, 1d 42'), with a statistical uncertainty of 16.0 degrees.

The angle from the Fermi LAT boresight is 35.0 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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