HESS: RXJ1713 First resolved
TeV g-ray image of a
Shell type SNR (Resolution ~10 arcmin)
Acceleration source of Cosmic Rays, but is it evidence of
HESS: RXJ1713 – Molecular Clouds
Have g-rays from p0 decay been discovered?
Active Galactic Nuclei (AGN)
VLA image of Cygnus A
Cosmogenic neutrinos are guaranteed if primaries are nucleons.
May be much larger fluxes, for some models, such as topological defects
Shocks: external collisions with interstellar material or internal collisions when slower material is overtaken by faster in the fireball.
Bounds on energy dependence of the speed of light can be used to place
constraints on the effective energy scale for quantum gravitational effects.
E2-c2p2~E2x(E/EQG)a - This may be modified in some quantum gravity
This has the important observational consequence that this will give
rise to energy dependent delays between arrival times of photons.