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GCN Circular 29789

GRB 210411A: Fermi GBM Final Real-time Localization
2021-04-11T03:41:20Z (3 years ago)
Fermi GBM Team at MSFC/Fermi-GBM <>
The Fermi GBM team reports the detection of a likely LONG GRB

At 03:30:56 UT on 11 Apr 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210411A (trigger 639804661.435174 / 210411146).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 259.4, Dec = -27.4 (J2000 degrees, equivalent to J2000 17h 17m, -27d 23'), with a statistical uncertainty of 3.0 degrees.

The angle from the Fermi LAT boresight is 90.0 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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