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GCN Circular 33553

Subject
GRB 230402A: Fermi GBM Final Real-time Localization
Date
2023-04-02T07:42:54Z (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 LONG GRB

At 07:32:35 UT on 2 Apr 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230402A (trigger 702113560.95607 / 230402314).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 93.1, Dec = -14.6 (J2000 degrees, equivalent to J2000 06h 12m, -14d 35'), with a statistical uncertainty of 1.0 degrees.

The angle from the Fermi LAT boresight is 18.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230402314/quicklook/glg_skymap_all_bn230402314.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/bn230402314/quicklook/glg_healpix_all_bn230402314.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230402314/quicklook/glg_lc_medres34_bn230402314.gif
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