TITLE: GCN CIRCULAR NUMBER: 35759 SUBJECT: GRB 240220A: Fermi GBM Final Real-time Localization DATE: 24/02/20 11:25:52 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 11:15:23 UT on 20 Feb 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240220A (trigger 730120528.966366 / 240220469). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 55.2, Dec = 26.4 (J2000 degrees, equivalent to J2000 03h 40m, 26d 23'), with a statistical uncertainty of 2.2 degrees. The angle from the Fermi LAT boresight is 77.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240220469/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/bn240220469/q... The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240220469/q... View this GCN Circular online at https://gcn.nasa.gov/circulars/35759. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...