TITLE:   GCN CIRCULAR
NUMBER:  35902
SUBJECT: GRB 240308A: Fermi GBM Final Localization
DATE:    24/03/08 14:47:01 GMT
FROM:    Elisabetta Bissaldi at Politecnico and INFN Bari <elisabetta.bissaldi@ba.infn.it>

The Fermi GBM team reports the detection of a likely LONG GRB

"At 06:25:22.05 UT on 08 March 2024, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 240308A (trigger 731571927 / 240308268).

The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 77.89, Dec = 50.92 (J2000 degrees, equivalent to J2000 05h 11m, 50d 55'),
with a statistical uncertainty of Error Radius = 4.56 degrees.

The angle from the Fermi LAT boresight is 25 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240308268/quicklook/glg_skymap_all_bn240308268.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/bn240308268/quicklook/glg_healpix_all_bn240308268.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240308268/quicklook/glg_lc_medres34_bn240308268.gif"