TITLE:   GCN CIRCULAR
NUMBER:  29715
SUBJECT: GRB 210324B: Fermi GBM Final Real-time Localization
DATE:    21/03/24 19:35:15 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 19:25:06 UT on 24 Mar 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210324B (trigger 638306711.486032 / 210324809).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 173.5, Dec = 6.5 (J2000 degrees, equivalent to J2000 11h 33m, 6d 30'), with a statistical uncertainty of 12.5 degrees.

The angle from the Fermi LAT boresight is 43.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324809/quicklook/glg_skymap_all_bn210324809.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/bn210324809/quicklook/glg_healpix_all_bn210324809.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324809/quicklook/glg_lc_medres34_bn210324809.gif