GCN Circular 26593
Subject
GRB 191227A: Fermi GBM Final Real-time Localization
Date
2019-12-27T01:49:48Z (5 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 01:39:24 UT on 27 Dec 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191227A (trigger 599103569.720864 / 191227069).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 319.7, Dec = -13.2 (J2000 degrees, equivalent to J2000 21h 18m, -13d 11'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 93.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191227069/quicklook/glg_skymap_all_bn191227069.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/bn191227069/quicklook/glg_healpix_all_bn191227069.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191227069/quicklook/glg_lc_medres34_bn191227069.gif