TITLE: GCN CIRCULAR NUMBER: 35344 SUBJECT: GRB 231215B: Fermi GBM Final Real-time Localization DATE: 23/12/15 09:57:45 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 09:47:17 UT on 15 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231215B (trigger 724326442.811262 / 231215408). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 11.1, Dec = 61.2 (J2000 degrees, equivalent to J2000 00h 44m, 61d 12'), with a statistical uncertainty of 1.0 degrees. The angle from the Fermi LAT boresight is 114.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231215408/q... The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231215408/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231215408/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/35344. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...