TITLE: GCN CIRCULAR NUMBER: 36914 SUBJECT: GRB 240721A: Fermi GBM Final Real-time Localization DATE: 24/07/21 08:43:41 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov> The Fermi GBM team reports the detection of a likely LONG GRB At 08:32:57 UT on 21 Jul 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240721A (trigger 743243582.02364 / 240721356). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 122.2, Dec = 7.1 (J2000 degrees, equivalent to J2000 08h 08m, 7d 05'), with a statistical uncertainty of 8.8 degrees. The angle from the Fermi LAT boresight is 101.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240721356/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/bn240721356/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240721356/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/36914. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...