TITLE:   GCN CIRCULAR
NUMBER:  35869
SUBJECT: GRB 240305A: Fermi GBM Final Real-time Localization
DATE:    24/03/05 09:59:51 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 09:49:21 UT on 5 Mar 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240305A (trigger 731324966.26389 / 240305409).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 21.1, Dec = -42.1 (J2000 degrees, equivalent to J2000 01h 24m, -42d 06'), with a statistical uncertainty of 9.8 degrees.

The angle from the Fermi LAT boresight is 67.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240305409/quicklook/glg_skymap_all_bn240305409.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/bn240305409/quicklook/glg_healpix_all_bn240305409.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240305409/quicklook/glg_lc_medres34_bn240305409.gif