General information
Fermi GBM triggered on 2026-07-07 at 03:25:09 UT on an event initially called likely short GRB 260707A, with an on-ground location RA 283.4 deg, Dec -54.7 deg and statistical uncertainty 13.3 deg. A later Fermi GBM circular states that trigger 805087514/260707142 is not due to a GRB and is likely a Terrestrial Gamma-ray Flash.
Wavelength coverage
- Gamma-ray: Fermi GBM detected the trigger and issued the initial localization; the later GBM notice reclassified it as not a GRB, likely a TGF.
- High-energy gamma-ray context: the initial circular reports the angle from the Fermi LAT boresight as 165.0 deg, but no LAT detection is reported.
No observations are mentioned in optical, infrared, radio, X-ray, neutrino, or gravitational-wave bands.
Lightcurve and spectrum
- A GBM light-curve product is referenced in the initial circular, but no duration, fluence, flux, or spectral parameters are reported in the provided text.
Redshift
What’s special vs typical
- The key point is the classification reversal: this was initially labeled a likely short GRB but was later reported by the GBM team as not a GRB and likely a Terrestrial Gamma-ray Flash.