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Asymmetric diffusion of cosmic rays
dc.contributor.author | Medvedev, Mikhail V. | |
dc.contributor.author | Medvedev, Viktor V. | |
dc.date.accessioned | 2016-12-07T16:05:53Z | |
dc.date.available | 2016-12-07T16:05:53Z | |
dc.date.issued | 2015-08-26 | |
dc.identifier.citation | Medvedev, M. V., & Medvedev, V. V. (2015). Asymmetric diffusion of cosmic rays. Physics of Plasmas (1994-present), 22(9), 091504. | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/22156 | |
dc.description.abstract | Cosmic ray propagation is diffusive because of pitch angle scattering by waves. We demonstrate that if the high-amplitude magnetohydrodynamic turbulence with ~ B=hBi 1 is present on top of the mean field gradient, the diffusion becomes asymmetric. As an example, we consider the vertical transport of cosmic rays in our Galaxy propagating away from a point-like source. We solve this diffusion problem analytically using a one-dimensional Markov chain analysis. We obtained that the cosmic ray density markedly differs from the standard diffusion prediction and has a sizable effect on their distribution throughout the galaxy. The equation for the continuous limit is also derived, which shows limitations of the convection-diffusion equation. | en_US |
dc.publisher | AIP Publishing | en_US |
dc.rights | The following article appeared in Physics of Plasmas and may be found at dx.doi.org/10.1063/1.4928942 | en_US |
dc.title | Asymmetric diffusion of cosmic rays | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Medvedev, Mikhail V. | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1063/1.4928942 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess |