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GCN Circular 27484

GRB 200403B: Fermi GBM Final Real-time Localization
2020-04-03T22:14:27Z (4 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
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:

The HEALPix FITS file, including the estimated localization systematic, can be found here:

The GBM light curve can be found here:
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