very-high-energy gamma rays
(energetic gamma rays with 100 GeV to 100 TeV photon energy)
The term very-high-energy gamma rays (VHEGR) is
used for gamma rays in the 100 GeV to 100 TeV range
of photon energy. Such high-energy photons are detected,
typically using detectors aimed at this specific range
by detecting the Cherenkov radiation associated with air showers
the VHEGR-photon interaction with Earth atmosphere produces
particles with sufficient kinetic energy to produce lower-frequency
Cherenkov radiation as they, in turn, pass through the atmosphere.
One reason such gamma rays are of interest is the assumption that
they travel very straight, increasing the chances of identifying
The term VHE is also used more generally for this energy range.
Photons beyond 100 TeV are termed ultra-high-energy gamma rays.
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Referenced by pages:
ultra-high-energy gamma rays (UHEGR)