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GCN Circular 34198

GRB 230709C: Fermi GBM Final Localization
2023-07-10T20:07:49Z (a year ago)
Peter Veres at University of Alabama in Huntsville <>

The Fermi GBM team reports the detection of a likely SHORT GRB

"At 17:38:26.82 UT on 09 July 2023, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 230709C (trigger 710617111/230709735), which 
initially was classified as a non-GRB trigger by the flight software.

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 267.56, Dec = -70.47 (J2000 degrees, equivalent to J2000 17h 50m, -70d 28'),
with a statistical uncertainty of 1.44 degrees.

The angle from the Fermi LAT boresight is 131 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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