TITLE:   GCN CIRCULAR
NUMBER:  27489
SUBJECT: GRB 200403C: Fermi GBM Final Real-time Localization
DATE:    20/04/03 23:32:22 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 23:21:57 UT on 3 Apr 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200403C (trigger 607648922.370564 / 200403974).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 48.8, Dec = 19.1 (J2000 degrees, equivalent to J2000 03h 15m, 19d 06'), with a statistical uncertainty of 5.0 degrees.

The angle from the Fermi LAT boresight is 107.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200403974/quicklook/glg_skymap_all_bn200403974.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/bn200403974/quicklook/glg_healpix_all_bn200403974.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200403974/quicklook/glg_lc_medres34_bn200403974.gif