On energy spectra of UHE cosmic rays accelerated in supergalactic accretion flows

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dc.creatorSiemieniec, G.
dc.creatorOstrowski, M.
dc.date2000-02-03
dc.date.accessioned2026-07-07T01:52:05Z
dc.date.available2026-07-07T01:52:05Z
dc.descriptionSome ultra-high energy (UHE) cosmic ray (CR) events may be correlated with the Local Supercluster plane. We consider acceleration of such particles at the large-scale accretion flows of matter towards such plane and/or accretion flows onto galaxy clusters. The formed shocks and the general compression flow are expected to allow for CR diffusive acceleration of UHE particles. For a simplified flow geometry we consider a stationary acceleration of such CRs and we discuss influence of model parameters on a particle spectral index. We show that the general convergent flow pattern leads naturally to very flat proton spectra with the phase-space spectral indices $σ\approx 3.0$, as compared to the `canonical' shock value of 4.0.
dc.description5 pages, 2 figures, submitted to Astron. Astrophys
dc.identifierhttps://arxiv.org/abs/astro-ph/0002075
dc.identifierhttp://arxiv.org/abs/astro-ph/0002075
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/506
dc.subjectAstrophysics
dc.titleOn energy spectra of UHE cosmic rays accelerated in supergalactic accretion flows
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