TITLE:   GCN CIRCULAR
NUMBER:  37640
SUBJECT: GRB 240930B: Fermi GBM Final Real-time Localization
DATE:    24/09/30 17:28:37 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 17:18:02 UT on 30 Sep 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240930B (trigger 749409487.116994 / 240930721).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 313.7, Dec = 40.8 (J2000 degrees, equivalent to J2000 20h 54m, 40d 47'), with a statistical uncertainty of 1.8 degrees.

The angle from the Fermi LAT boresight is 110.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240930721/quicklook/glg_skymap_all_bn240930721.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/bn240930721/quicklook/glg_healpix_all_bn240930721.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240930721/quicklook/glg_lc_medres34_bn240930721.gif