[vsnet-grb-info 28596] GRB 210824A: Fermi GBM Final Real-time Localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  30699
SUBJECT: GRB 210824A: Fermi GBM Final Real-time Localization
DATE:    21/08/24 04:20:26 GMT
FROM:    Fermi GBM Team at MSFC/Fermi-GBM  <do_not_reply at GIOC.nsstc.nasa.gov>

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

At 04:10:03 UT on 24 Aug 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210824A (trigger 651471008.06188 / 210824174).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 235.1, Dec = 10.4 (J2000 degrees, equivalent to J2000 15h 40m, 10d 24'), with a statistical uncertainty of 5.3 degrees.

The angle from the Fermi LAT boresight is 77.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210824174/quicklook/glg_skymap_all_bn210824174.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210824174/quicklook/glg_healpix_all_bn210824174.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210824174/quicklook/glg_lc_medres34_bn210824174.gif