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GCN Circular 26078

Subject
GRB 191027A: Fermi GBM Final Real-time Localization
Date
2019-10-27T15:29:32Z (4 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 15:19:07 UT on 27 Oct 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191027A (trigger 593882352.589944 / 191027638).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 185.5, Dec = 30.4 (J2000 degrees, equivalent to J2000 12h 22m, 30d 23'), with a statistical uncertainty of 2.6 degrees.

The angle from the Fermi LAT boresight is 33.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191027638/quicklook/glg_skymap_all_bn191027638.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191027638/quicklook/glg_healpix_all_bn191027638.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191027638/quicklook/glg_lc_medres34_bn191027638.gif
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