GCN Circular 33566
Subject
GRB 230405A: Fermi GBM Final Real-time Localization
Date
2023-04-05T15:13:37Z (2 years 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 LONG GRB
At 15:03:04 UT on 5 Apr 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230405A (trigger 702399789.583538 / 230405627).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 341.9, Dec = 77.0 (J2000 degrees, equivalent to J2000 22h 47m, 77d 00'), with a statistical uncertainty of 5.6 degrees.
The angle from the Fermi LAT boresight is 138.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230405627/quicklook/glg_skymap_all_bn230405627.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/bn230405627/quicklook/glg_healpix_all_bn230405627.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230405627/quicklook/glg_lc_medres34_bn230405627.gif