[vsnet-grb-info 24494] GRB 191227A: Fermi GBM Final Real-time Localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26593
SUBJECT: GRB 191227A: Fermi GBM Final Real-time Localization
DATE:    19/12/27 01:49:48 GMT
FROM:    Fermi GBM Team at MSFC/Fermi-GBM  <do_not_reply at 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