TITLE: GCN CIRCULAR NUMBER: 36992 SUBJECT: GRB 240731A: Fermi GBM Final Localization DATE: 24/07/31 20:44:01 GMT FROM: Vidushi Sharma at NASA GSFC/UMBC vidushi.sharma@nasa.gov

The Fermi GBM team reports the detection of a likely LONG GRB, which was also detected by AstroSat (Srijan et al. 2024, GCN 36989) and INTEGRAL SPI ACS trigger 10826.

"At 14:20:12.45 UT on 31 July 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240731A (trigger 744128417/240731597).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 8.65, Dec = -46.27 (J2000 degrees, equivalent to J2000 0h 34m, -46d 16'), with a statistical uncertainty of 6.55 degrees.

The angle from the Fermi LAT boresight is 58 degrees.

The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240731597/q...

The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240731597/q...

The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240731597/q..."

View this GCN Circular online at https://gcn.nasa.gov/circulars/36992. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...