GCN Circular 30894
Subject
GRB 210929A: Fermi GBM Final Real-time Localization
Date
2021-09-29T03:51:22Z (3 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely SHORT GRB
At 03:41:39 UT on 29 Sep 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210929A (trigger 654579704.256098 / 210929154).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 317.8, Dec = 12.3 (J2000 degrees, equivalent to J2000 21h 11m, 12d 18'), with a statistical uncertainty of 14.1 degrees.
The angle from the Fermi LAT boresight is 67.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210929154/quicklook/glg_skymap_all_bn210929154.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/bn210929154/quicklook/glg_healpix_all_bn210929154.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210929154/quicklook/glg_lc_medres34_bn210929154.gif