TITLE: GCN CIRCULAR NUMBER: 41395 SUBJECT: GRB 250815A: Fermi GBM Final Localization DATE: 25/08/15 15:51:47 GMT FROM: Utkarsh Pathak at IIT Bombay utkarshpathak.07@gmail.com
The Fermi GBM team reports the detection of a likely SHORT GRB
"At 11:49:10.84 UT on 15 August 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250815A (trigger 776951355/250815492). The duration and the spectrum suggest an SGR flare, but it is not near the galactic plane, so further follow-up is encouraged.
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 221.57, Dec = -1.10 (J2000 degrees, equivalent to J2000 14h 46m, -1d 6'), with a statistical uncertainty of 7.79 degrees.
The angle from the Fermi LAT boresight is 30 degrees.
The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250815492/q...
The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250815492/q...
The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250815492/q..."
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