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GCN Circular 32427

Subject
GRB 220728A: Fermi GBM Final Real-time Localization
Date
2022-07-28T16:30:57Z (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 SHORT GRB

At 16:20:39 UT on 28 Jul 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220728A (trigger 680718044.343708 / 220728681).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 5.4, Dec = 36.2 (J2000 degrees, equivalent to J2000 00h 21m, 36d 12'), with a statistical uncertainty of 15.2 degrees.

The angle from the Fermi LAT boresight is 77.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220728681/quicklook/glg_skymap_all_bn220728681.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220728681/quicklook/glg_healpix_all_bn220728681.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220728681/quicklook/glg_lc_medres34_bn220728681.gif
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