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GCN Circular 26102

GRB 191031A: Fermi GBM Final Real-time Localization
2019-10-31T00:46:50Z (5 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 00:36:35 UT on 31 Oct 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191031A (trigger 594175000.608294 / 191031025).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 247.3, Dec = 22.1 (J2000 degrees, equivalent to J2000 16h 29m, 22d 06'), with a statistical uncertainty of 12.9 degrees.

The angle from the Fermi LAT boresight is 93.0 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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