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TITLE:   GCN CIRCULAR
NUMBER:  27644
SUBJECT: GRB 200425B: Fermi GBM Final Real-time Localization
DATE:    20/04/25 17:00:15 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 16:49:50 UT on 25 Apr 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200425B (trigger 609526195.945476 / 200425701).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 304.6, Dec = 38.2 (J2000 degrees, equivalent to J2000 20h 18m, 38d 12'), with a statistical uncertainty of 7.2 degrees.

The angle from the Fermi LAT boresight is 65.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200425701/quicklook/glg_skymap_all_bn200425701.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200425701/quicklook/glg_healpix_all_bn200425701.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200425701/quicklook/glg_lc_medres34_bn200425701.gif