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GCN Circular 33713

Subject
GRB 230430A: Fermi GBM Final Real-time Localization
Date
2023-04-30T07:57:58Z (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 07:47:18 UT on 30 Apr 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230430A (trigger 704533643.80535 / 230430325).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 184.2, Dec = 40.8 (J2000 degrees, equivalent to J2000 12h 16m, 40d 47'), with a statistical uncertainty of 2.5 degrees.

The angle from the Fermi LAT boresight is 22.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230430325/quicklook/glg_skymap_all_bn230430325.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/bn230430325/quicklook/glg_healpix_all_bn230430325.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230430325/quicklook/glg_lc_medres34_bn230430325.gif


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