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GCN Circular 33489

GRB 230320A: Fermi GBM Final Real-time Localization
2023-03-20T22:56:34Z (a year ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely SHORT GRB

At 22:46:06 UT on 20 Mar 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230320A (trigger 701045171.191836 / 230320949).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 253.7, Dec = -37.0 (J2000 degrees, equivalent to J2000 16h 54m, -37d 00'), with a statistical uncertainty of 15.0 degrees.

The angle from the Fermi LAT boresight is 36.0 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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