TITLE: GCN CIRCULAR NUMBER: 38241 SUBJECT: GRB 241115B: Fermi GBM Final Real-time Localization DATE: 24/11/15 18:18:08 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 18:07:25 UT on 15 Nov 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241115B (trigger 753386850.967696 / 241115755).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 31.8, Dec = 45.0 (J2000 degrees, equivalent to J2000 02h 07m, 45d 00'), with a statistical uncertainty of 9.2 degrees.

The angle from the Fermi LAT boresight is 97.0 degrees.

The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241115755/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/bn241115755/q...

The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241115755/q...

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