TITLE:   GCN CIRCULAR
NUMBER:  36387
SUBJECT: GRB 240504A: Fermi GBM Final Real-time Localization
DATE:    24/05/04 05:23:23 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 05:12:52 UT on 4 May 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240504A (trigger 736492377.637702 / 240504217).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 64.6, Dec = -8.7 (J2000 degrees, equivalent to J2000 04h 18m, -8d 41'), with a statistical uncertainty of 2.4 degrees.

The angle from the Fermi LAT boresight is 64.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240504217/quicklook/glg_skymap_all_bn240504217.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/bn240504217/quicklook/glg_healpix_all_bn240504217.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240504217/quicklook/glg_lc_medres34_bn240504217.gif