TITLE:   GCN CIRCULAR
NUMBER:  33489
SUBJECT: GRB 230320A: Fermi GBM Final Real-time Localization
DATE:    23/03/20 22:56:34 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 SHORT GRB

At 22:46:06 UT on 20 Mar 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230320A (trigger 701045171.191836 / 230320949).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 253.7, Dec = -37.0 (J2000 degrees, equivalent to J2000 16h 54m, -37d 00'), with a statistical uncertainty of 15.0 degrees.

The angle from the Fermi LAT boresight is 36.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230320949/quicklook/glg_skymap_all_bn230320949.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230320949/quicklook/glg_healpix_all_bn230320949.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230320949/quicklook/glg_lc_medres34_bn230320949.gif