TITLE:   GCN CIRCULAR
NUMBER:  37386
SUBJECT: GRB 240905A: Fermi GBM Final Real-time Localization
DATE:    24/09/05 01:26:58 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 01:16:17 UT on 5 Sep 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240905A (trigger 747191782.094466 / 240905053).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 270.5, Dec = -24.7 (J2000 degrees, equivalent to J2000 18h 02m, -24d 41'), with a statistical uncertainty of 6.1 degrees.

The angle from the Fermi LAT boresight is 66.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240905053/quicklook/glg_skymap_all_bn240905053.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/bn240905053/quicklook/glg_healpix_all_bn240905053.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240905053/quicklook/glg_lc_medres34_bn240905053.gif