[vsnet-grb-info 26161] GRB 200818A: Fermi GBM Final Localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28261
SUBJECT: GRB 200818A: Fermi GBM Final Localization
DATE:    20/08/19 01:10:59 GMT
FROM:    Rachel Hamburg at UAH  <rkh0007 at uah.edu>

The Fermi GBM team reports the detection of a likely long GRB.

At 23:57:18.34 UT on 18 August 2020, the Fermi Gamma-ray Burst Monitor
(GBM) triggered and located GRB 200818A (trigger 619487843 / 200818889).

The on-ground calculated location, using the Fermi GBM trigger data, is RA
= 207.6, Dec = +22.1(J2000 degrees, equivalent to J2000 +13h 50m, +22d
07'), with a statistical uncertainty of 12 degrees.

The angle from the Fermi LAT boresight is 67 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200818889/quicklook/glg_skymap_all_bn200818889.png

The HEALPix FITS file, including the estimated localization systematic, can
be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200818889/quicklook/glg_healpix_all_bn200818889.fit