[vsnet-grb-info 27543] GRB 210312A: Fermi GBM Final Real-time Localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29646
SUBJECT: GRB 210312A: Fermi GBM Final Real-time Localization
DATE:    21/03/12 04:14:35 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 04:04:04 UT on 12 Mar 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210312A (trigger 637214649.894644 / 210312169).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 68.2, Dec = -16.3 (J2000 degrees, equivalent to J2000 04h 32m, -16d 18'), with a statistical uncertainty of 9.9 degrees.

The angle from the Fermi LAT boresight is 47.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210312169/quicklook/glg_skymap_all_bn210312169.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/bn210312169/quicklook/glg_healpix_all_bn210312169.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210312169/quicklook/glg_lc_medres34_bn210312169.gif