TITLE:   GCN CIRCULAR
NUMBER:  36012
SUBJECT: GRB 240402A: Fermi GBM Final Real-time Localization
DATE:    24/04/02 23:54:34 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 23:44:04 UT on 2 Apr 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240402A (trigger 733794249.222788 / 240402989).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 220.9, Dec = 29.3 (J2000 degrees, equivalent to J2000 14h 43m, 29d 18'), with a statistical uncertainty of 25.0 degrees.

The angle from the Fermi LAT boresight is 98.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240402989/quicklook/glg_skymap_all_bn240402989.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/bn240402989/quicklook/glg_healpix_all_bn240402989.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240402989/quicklook/glg_lc_medres34_bn240402989.gif