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キーワード:
Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
MPINP:
Hochenergie-Astrophysik Theorie - Abteilung Hofmann
要旨:
A stationary distribution function that describes the entire processes of
propagation of relativistic particles, including the transition between the
ballistic and diffusion regimes, is obtained. The spacial component of the
constructed function satisfies to the first two moments of the Boltzmann
equation. The angular part of the distribution provides accurate values for the
angular moments derived from the Boltzmann equation, and gives a correct
expression in the limit of small-angle approximation. Using the derived
function, we studied the gamma-ray images produced through the $pp$ interaction
of relativistic particles with gas clouds in the proximity of the accelerator.
In general, the morphology and the energy spectra of gamma-rays significantly
deviate from the "standard" results corresponding to the propagation of
relativistic particles strictly in the diffusion regime.
