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GCN Circular 27870

Subject
GRB 200531A: Fermi GBM Final Real-time Localization
Date
2020-05-31T03:01:39Z (3 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 02:51:18 UT on 31 May 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200531A (trigger 612586283.524172 / 200531119).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 164.6, Dec = 31.9 (J2000 degrees, equivalent to J2000 10h 58m, 31d 53'), with a statistical uncertainty of 8.1 degrees.

The angle from the Fermi LAT boresight is 124.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200531119/quicklook/glg_skymap_all_bn200531119.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/bn200531119/quicklook/glg_healpix_all_bn200531119.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200531119/quicklook/glg_lc_medres34_bn200531119.gif
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