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GCN Circular 31871

Subject
GRB 220411A: Fermi GBM Final Real-time Localization
Date
2022-04-11T07:29:20Z (2 years ago)
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 07:20:00 UT on 11 Apr 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220411A (trigger 671354405.530438 / 220411306).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 178.2, Dec = 25.6 (J2000 degrees, equivalent to J2000 11h 52m, 25d 36'), with a statistical uncertainty of 1.7 degrees.

The angle from the Fermi LAT boresight is 6.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220411306/quicklook/glg_skymap_all_bn220411306.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220411306/quicklook/glg_healpix_all_bn220411306.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220411306/quicklook/glg_lc_medres34_bn220411306.gif
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