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GCN Circular 34106

GRB 230628C: Fermi GBM Final Real-time Localization
2023-06-28T17:47:08Z (a year ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 17:36:34 UT on 28 Jun 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230628C (trigger 709666599.86266 / 230628734).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 301.0, Dec = 35.6 (J2000 degrees, equivalent to J2000 20h 03m, 35d 36'), with a statistical uncertainty of 3.3 degrees.

The angle from the Fermi LAT boresight is 18.0 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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