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Reference: Alves Batista, R, Shin, M-S, Devriendt, J et al., (2017). Implications of strong intergalactic magnetic fields for ultrahigh-energy cosmic-ray astronomy. Physical Review D.Citable link to this page:

 

Implications of strong intergalactic magnetic fields for ultrahigh-energy cosmic-ray astronomy

Abstract: We study the propagation of ultra-high-energy cosmic rays in the magnetised cosmic web. We focus on the particular case of highly magnetised voids (B ~ nG), using the upper bounds from the Planck satellite. The cosmic web was obtained from purely magnetohydrodynamical cosmological simulations of structure formation considering different power spectra for the seed magnetic field in order to account for theoretical uncertainties. We investigate the impact of these uncertainties on the propagation of cosmic rays, showing that they can affect the measured spectrum and composition by up to ≃ 80% and ≃ 5%, respectivelly. In our scenarios, even if magnetic fields in voids are strong, deflections of 50 EeV protons from sources closer than ~ 50 Mpc are less than 15° in approximately 10-50% of the sky, depending on the distribution of sources and magnetic power spectrum. Therefore, UHECR astronomy might be possible in a significant portion of the sky depending on the primordial magnetic power spectrum, provided that protons constitute a sizeable fraction of the observed UHECR flux.

Publication status:PublishedPeer Review status:Peer reviewedVersion:Accepted manuscriptDate of acceptance:2017-06-14 Funder: Balzan Foundation   Funder: German Research Foundation   Funder: Helmholtz Association   Funder: German Federal Ministry of Education and Research   Notes:© 2017 American Physical Society

Bibliographic Details

Publisher: American Physical Society

Publisher Website: https://www.aps.org/

Journal: Physical Review Dsee more from them

Publication Website: https://journals.aps.org/prd/

Issue Date: 2017-07Identifiers

Doi: https://doi.org/10.1103/PhysRevD.96.023010

Issn: 2470-0029

Uuid: uuid:db5aa144-56fa-43bc-8928-2f5d8a4b77a6

Urn: uri:db5aa144-56fa-43bc-8928-2f5d8a4b77a6

Pubs-id: pubs:709685 Item Description

Type: journal-article;

Version: Accepted manuscript

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Author: Alves Batista, R - Oxford, MPLS, Physics, Astrophysics - - - Shin, M-S - - - Devriendt, J - Oxford, MPLS, Physics, Astrophysics -

Source: https://ora.ox.ac.uk/objects/uuid:db5aa144-56fa-43bc-8928-2f5d8a4b77a6



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