The telegraph approximation for focused cosmic-ray transport in the presence of boundaries

Autor:	Litvinenko, Yuri E., Effenberger, Frederic, Schlickeiser, Reinhard
Rok vydání:	2015
Předmět:	Physics - Space Physics Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	Diffusive cosmic-ray transport in nonuniform large-scale magnetic fields in the presence of boundaries is considered. Reflecting and absorbing boundary conditions are derived for a modified telegraph equation with a convective term. Analytical and numerical solutions of illustrative boundary problems are presented. The applicability and accuracy of the telegraph approximation for focused cosmic-ray transport in the presence of boundaries are discussed, and potential applications to modeling cosmic-ray transport are noted. Comment: 23 pages, 5 figures, accepted for publication in ApJ
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1505.05134 Zobrazit plný text záznamu View this record from Arxiv