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GCN Circular 34165

GRB 230707B: Fermi GBM Final Real-time Localization
2023-07-07T18:56:58Z (10 months ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 18:46:20 UT on 7 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230707B (trigger 710448385.289496 / 230707782).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 28.5, Dec = -41.3 (J2000 degrees, equivalent to J2000 01h 53m, -41d 17'), with a statistical uncertainty of 2.2 degrees.

The angle from the Fermi LAT boresight is 83.0 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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