GCN Circular 43096
Subject
GRB 251214C: Fermi GBM Final Localization
Event
Date
2025-12-14T13:08:43Z (2 days ago)
From
Marianna Dafčíková at Masaryk University <500025@mail.muni.cz>
Via
Web form
The Fermi GBM team reports the detection of a likely LONG GRB
"At 09:17:32.51 UT on 14 December 2025, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 251214C (trigger 787396657/251214387).
The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 346.3, Dec = 41.0 (J2000 degrees, equivalent to J2000 23h 05m, +41d 0'),
with a statistical uncertainty of 6.0 degrees.
The angle from the Fermi LAT boresight is 138 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251214387/quicklook/glg_skymap_all_bn251214387.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251214387/quicklook/glg_healpix_all_bn251214387.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251214387/quicklook/glg_lc_medres34_bn251214387.gif"