TITLE: GCN CIRCULAR NUMBER: 35809 SUBJECT: GRB 240226B: Fermi GBM Final Real-time Localization DATE: 24/02/26 21:41:00 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 05:40:04 UT on 26 Feb 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240226B (trigger 730618809.579832 / 240226236). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 353.7, Dec = -24.4 (J2000 degrees, equivalent to J2000 23h 34m, -24d 23'), with a statistical uncertainty of 5.4 degrees. The angle from the Fermi LAT boresight is 100.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240226236/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/bn240226236/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240226236/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/35809. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...