Litvinenko, Yuri E.Effenberger, FredericSchlickeiser, Reinhard2015-07-2820152015-07-282015Litvinenko, Y. E., Effenberger, F., & Schlickeiser, R. (2015). The telegraph approximation for focused cosmic-ray transport in the presence of boundaries. Astrophysical Journal, 806:217. http://doi.org/10.1088/0004-637X/806/2/2170004-637Xhttps://hdl.handle.net/10289/9485Diffusive 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.application/pdfen© 2015 The American Astronomical Society. All rights reserved.cosmic raysdiffusionmagnetic fieldsscatteringSun: particle emissionThe telegraph approximation for focused cosmic-ray transport in the presence of boundariesJournal Article10.1088/0004-637X/806/2/2171538-4357