[vsnet-grb-info 27259] GRB 210127A: Fermi GBM Final Real-time Localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29362
SUBJECT: GRB 210127A: Fermi GBM Final Real-time Localization
DATE:    21/01/27 06:36:33 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 06:26:17 UT on 27 Jan 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210127A (trigger 633421582.019982 / 210127268).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 54.2, Dec = 41.8 (J2000 degrees, equivalent to J2000 03h 36m, 41d 47'), with a statistical uncertainty of 18.1 degrees.

The angle from the Fermi LAT boresight is 31.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210127268/quicklook/glg_skymap_all_bn210127268.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210127268/quicklook/glg_healpix_all_bn210127268.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210127268/quicklook/glg_lc_medres34_bn210127268.gif