Modulation of the galactic cosmic ray spectrum in an anisotropic diffusion approach
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913949196222464 |
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| author | Borisov, V. D. Yurovsky, V. O. Kudryashov, I. A. |
| author_facet | Borisov, V. D. Yurovsky, V. O. Kudryashov, I. A. |
| contents | We introduce a novel diffusion model for the propagation of cosmic rays (CRs) that incorporates an anisotropic diffusion tensor of a general form within a realistically modeled large-scale Galactic magnetic field. The parameters of the model are consistent with the contemporary understanding of the large-scale Galactic magnetic field structure and the dynamics of small-scale turbulent CR propagation. The paper demonstrates the modulation of spectra of Galactic cosmic rays (GCRs) in the magnetic rigidity range of 1 - 30 PV (the CR knee) and explores the spatial variation of this phenomenon. The observed modulation of the spectrum is explained by changes in the leakage mechanism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19062 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Modulation of the galactic cosmic ray spectrum in an anisotropic diffusion approach Borisov, V. D. Yurovsky, V. O. Kudryashov, I. A. High Energy Astrophysical Phenomena We introduce a novel diffusion model for the propagation of cosmic rays (CRs) that incorporates an anisotropic diffusion tensor of a general form within a realistically modeled large-scale Galactic magnetic field. The parameters of the model are consistent with the contemporary understanding of the large-scale Galactic magnetic field structure and the dynamics of small-scale turbulent CR propagation. The paper demonstrates the modulation of spectra of Galactic cosmic rays (GCRs) in the magnetic rigidity range of 1 - 30 PV (the CR knee) and explores the spatial variation of this phenomenon. The observed modulation of the spectrum is explained by changes in the leakage mechanism. |
| title | Modulation of the galactic cosmic ray spectrum in an anisotropic diffusion approach |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2502.19062 |