TITLE:   GCN CIRCULAR
NUMBER:  36958
SUBJECT: GRB 240727A: Fermi GBM Final Real-time Localization
DATE:    24/07/28 00:02:26 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 23:51:46 UT on 27 Jul 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240727A (trigger 743817111.069264 / 240727994).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 115.5, Dec = -33.0 (J2000 degrees, equivalent to J2000 07h 42m, -33d 00'), with a statistical uncertainty of 6.0 degrees.

The angle from the Fermi LAT boresight is 22.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240727994/quicklook/glg_skymap_all_bn240727994.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/bn240727994/quicklook/glg_healpix_all_bn240727994.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240727994/quicklook/glg_lc_medres34_bn240727994.gif