  Photons and thermal photons are studied in the Rindler Wedge employing
Feynman's gauge and canonical quantization. A Gupta-Bleuler-like formalism is
explicitly implemented. Non thermal Wightman functions and related (Euclidean
and Lorentzian) Green functions are explicitly calculated and their complex
time analytic structure is analyzed using the Fulling-Ruijsenaars master
function. The invariance of the advanced minus retarded fundamental solution is
checked and a Ward identity discussed. It is suggested the KMS condition can be
implemented to define thermal states also dealing with unphysical photons.
Following this way, thermal Wightman functions and related (Euclidean and
Lorentzian) Green functions are built up. Their analytic structure is examined
employing a thermal master function as in the non thermal case and other
corresponding properties are discussed. Some subtleties arising dealing with
unphysical photons in presence of the Rindler conical singularity are pointed
out. In particular, a family of thermal Wightman and Schwinger functions with
the same physical content is proved to exist due to a remaining static gauge
ambiguity. A photon version of Bisognano-Wichmann theorem is investigated in
the case of photons propagating in the Rindler Wedge employing Wightman
functions. Despite of the found ambiguity in defining Rindler Green functions,
the coincidence of $(\beta = 2\pi)$-Rindler Wightman functions and Minkowski
Wightman functions is proved dealing with test functions related to physical
photons and Lorentz photons.
