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TITLE:   GCN CIRCULAR
NUMBER:  31835
SUBJECT: GRB 220405A: Fermi GBM Final Localization
DATE:    22/04/05 15:43:46 GMT
FROM:    Elisabetta Bissaldi at INFN,Bari  <elisabetta.bissaldi@ba.infn.it>

The Fermi GBM team reports the detection of a likely LONG GRB.

At 06:11:39.12 UT on 5 Apr 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220405A (trigger 670831904.120598 / 220405258).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 29.4, Dec = -22.8 (J2000 degrees, equivalent to J2000 01h 57m, -22d 48'), with a statistical uncertainty of 1.2 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/2022/bn220405258/quicklook/glg_skymap_all_bn220405258.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/bn220405258/quicklook/glg_healpix_all_bn220405258.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220405258/quicklook/glg_lc_medres34_bn220405258.gif