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TITLE:   GCN CIRCULAR
NUMBER:  32010
SUBJECT: GRB 220508A: Fermi GBM Final Real-time Localization
DATE:    22/05/08 22:43:05 GMT
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 22:32:49 UT on 8 May 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220508A (trigger 673741974.516028 / 220508939).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 344.4, Dec = -3.2 (J2000 degrees, equivalent to J2000 22h 57m, -3d 12'), with a statistical uncertainty of 3.0 degrees.

The angle from the Fermi LAT boresight is 69.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220508939/quicklook/glg_skymap_all_bn220508939.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/bn220508939/quicklook/glg_healpix_all_bn220508939.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220508939/quicklook/glg_lc_medres34_bn220508939.gif