GCN Circular 33489
Subject
GRB 230320A: Fermi GBM Final Real-time Localization
Date
2023-03-20T22:56:34Z (a year ago)
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
