[vsnet-grb-info 27011] GRB 201221E: Fermi GBM Final Real-time Localization
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Tue Dec 22 08:51:59 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 29114
SUBJECT: GRB 201221E: Fermi GBM Final Real-time Localization
DATE: 20/12/21 23:50:46 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 23:28:47 UT on 21 Dec 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 201221E (trigger 630286132.63327 / 201221978).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 158.1, Dec = -39.9 (J2000 degrees, equivalent to J2000 10h 32m, -39d 53'), with a statistical uncertainty of 5.2 degrees.
The angle from the Fermi LAT boresight is 90.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201221978/quicklook/glg_skymap_all_bn201221978.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/bn201221978/quicklook/glg_healpix_all_bn201221978.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201221978/quicklook/glg_lc_medres34_bn201221978.gif
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