TITLE:   GCN CIRCULAR
NUMBER:  27484
SUBJECT: GRB 200403B: Fermi GBM Final Real-time Localization
DATE:    20/04/03 22:14:27 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 22:04:03 UT on 3 Apr 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200403B (trigger 607644248.41943 / 200403919).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 239.9, Dec = 73.2 (J2000 degrees, equivalent to J2000 15h 59m, 73d 12'), with a statistical uncertainty of 4.2 degrees.

The angle from the Fermi LAT boresight is 36.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200403919/quicklook/glg_skymap_all_bn200403919.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/bn200403919/quicklook/glg_healpix_all_bn200403919.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200403919/quicklook/glg_lc_medres34_bn200403919.gif