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Filamentary Diffusion of Cosmic Rays on Small Scales

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arxiv 1204.1271 v2 pith:43OZW4RE submitted 2012-04-05 astro-ph.HE

G. Giacinti , M. Kachelriess , D. V. Semikoz This is my paper · ORCID
classification astro-ph.HE
keywords diffusionlmaxsourcescosmicfilamentaryirregularraysturbulent
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We investigate the diffusion of cosmic rays (CR) close to their sources. Propagating individual CRs in purely isotropic turbulent magnetic fields with maximal scale of spatial variations Lmax, we find that CRs diffuse anisotropically at distances r <~ Lmax from their sources. As a result, the CR densities around the sources are strongly irregular and show filamentary structures. We determine the transition time t* to standard diffusion as t* ~ 10^4 yr (Lmax/150 pc)^b (E/PeV)^(-g) (Brms/4 muG)^g, with b ~ 2 and g = 0.25-0.5 for a turbulent field with Kolmogorov power spectrum. We calculate the photon emission due to CR interactions with gas and the resulting irregular source images.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 40 citations worldwide. Full citation record

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