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Cosmic ray transport near the heliopause
Strauss, R. D.; Fichtner, H.; Potgieter, M. S.; le Roux, J. A.; Luo, X.; Strauss, RD (reprint author), North West Univ, Ctr Space Res, Durban, South Africa.
Department空间科学部
Source Publication14TH ANNUAL INTERNATIONAL ASTROPHYSICS CONFERENCE: LINEAR AND NONLINEAR PARTICLE ENERGIZATION THROUGHOUT THE HELIOSPHERE AND BEYOND
2015
Pages12026
Language英语
ISSN1742-6588
AbstractIn this paper we summarize our modelling efforts for cosmic rays near the heliopause, and discuss whether galactic cosmic ray modulation beyond the heliopause is possible and present an explanation for the anisotropic nature of the observed cosmic ray intensities in the very local interstellar medium. We show that (i) modulation beyond the heliopause is possible, but highly dependent on the assumed parameters (most notable, the perpendicular diffusion coefficient). Treating the heliopause as a tangential discontinuity, significantly damps this modulation effect and leads to modelled results that are similar to Voyager 1 observations. (ii) By choosing an appropriate functional form of the perpendicular diffusion coefficient on the pitch-angle level, we are able to account for the anisotropic behaviour observed for both galactic and anomalous cosmic rays in the local interstellar medium.
Conference Name14th Annual International Astrophysics Conference
Conference DateAPR 19-24, 2015
Conference PlaceTampa, FL
Indexed ByEI ; CPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5251
Collection空间科学部
Corresponding AuthorStrauss, RD (reprint author), North West Univ, Ctr Space Res, Durban, South Africa.
Recommended Citation
GB/T 7714
Strauss, R. D.,Fichtner, H.,Potgieter, M. S.,et al. Cosmic ray transport near the heliopause[C]:IOP PUBLISHING LTD,2015:12026.
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