GCN Circular 33759
Subject
GRB 230510B: Fermi GBM Final Real-time Localization
Date
2023-05-10T21:32:13Z (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 21:21:34 UT on 10 May 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230510B (trigger 705446499.012602 / 230510890).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 4.5, Dec = 30.0 (J2000 degrees, equivalent to J2000 00h 18m, 30d 00'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 66.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230510890/quicklook/glg_skymap_all_bn230510890.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/bn230510890/quicklook/glg_healpix_all_bn230510890.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230510890/quicklook/glg_lc_medres34_bn230510890.gif