TITLE:   GCN CIRCULAR
NUMBER:  37472
SUBJECT: GRB 240912B: Fermi GBM Final Real-time Localization
DATE:    24/09/12 12:48:23 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 12:38:00 UT on 12 Sep 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240912B (trigger 747837485.316546 / 240912526).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 226.1, Dec = 42.6 (J2000 degrees, equivalent to J2000 15h 04m, 42d 36'), with a statistical uncertainty of 2.0 degrees.

The angle from the Fermi LAT boresight is 147.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240912526/quicklook/glg_skymap_all_bn240912526.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240912526/quicklook/glg_healpix_all_bn240912526.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240912526/quicklook/glg_lc_medres34_bn240912526.gif