GCN Circular 34628
Subject
GRB 230905A: Fermi GBM Final Real-time Localization
Date
2023-09-05T15:55:23Z (8 months ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely SHORT GRB
At 15:44:59 UT on 5 Sep 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230905A (trigger 715621504.769918 / 230905656).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 154.8, Dec = -0.8 (J2000 degrees, equivalent to J2000 10h 19m, 0d 48'), with a statistical uncertainty of 14.4 degrees.
The angle from the Fermi LAT boresight is 64.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230905656/quicklook/glg_skymap_all_bn230905656.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/bn230905656/quicklook/glg_healpix_all_bn230905656.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230905656/quicklook/glg_lc_medres34_bn230905656.gif
