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If ultra-high-energy cosmic rays (UHECRs) originate from extragalactic sources, understanding the propagation of charged particles through the magnetized large scale structure (LSS) of the universe is crucial in the search for the…

Astrophysics · Physics 2009-11-13 Santabrata Das , Hyesung Kang , Dongsu Ryu , Jungyeon Cho

Ultrahigh energy cosmic rays (UHECRs) are believed to originate from astrophysical sources, which should trace the large scale structure (LSS) of the universe. On the other hand, the magnetic field in the intergalactic space (IGMF), which…

High Energy Astrophysical Phenomena · Physics 2009-06-29 Dongsu Ryu , Hyesung Kang , Santabrata Das

We study the proton flux expected from sources of ultra high energy cosmic rays (UHECR) in the presence of regular extragalactic magnetic fields. It is assumed that a local source of ultra-high energy protons and the magnetic field are all…

Astrophysics · Physics 2011-05-12 Todor Stanev , David Seckel , Ralph Engel

The origin of ultra-high-energy cosmic rays (UHECRs) remains an open question. Extragalactic magnetic fields can modify their propagation and, at sufficiently low energies, suppress the observed flux through the magnetic horizon (MH)…

High Energy Astrophysical Phenomena · Physics 2026-05-05 Allegra Firinu , Franco Vazza , Carmelo Evoli

The origin and composition of ultra-high energy cosmic rays (UHECRs) remain a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. Here we describe an…

High Energy Astrophysical Phenomena · Physics 2021-10-20 Andres Aramburo Garcia , Kyrylo Bondarenko , Alexey Boyarsky , Dylan Nelson , Annalisa Pillepich , Anastasia Sokolenko

We simulate the arrival distribution of ultra-high-energy (UHE) protons by following their propagation processes in several strengths of a structured extragalactic magnetic field (EGMF). Comparing our result to observational one by Akeno…

Astrophysics · Physics 2007-06-26 Hajime Takami , Katsuhiko Sato , ;

With the publicly available astrophysical simulation framework for propagating extraterrestrial UHE particles, CRPropa 3, it is now possible to study realistic UHECR source scenarios including deflections in Galactic and extragalactic…

High Energy Astrophysical Phenomena · Physics 2018-02-14 Arjen van Vliet , Rafael Alves Batista , Günter Sigl

We studied how the intergalactic magnetic field (IGMF) affects the propagation of super-GZK protons that originate from extragalactic sources within the local GZK sphere. Toward this end, we set up hypothetical sources of ultra-high-energy…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Dongsu Ryu , Santabrata Das , Hyesung Kang

The surprising isotropy of the ultra-high-energy cosmic ray (UHECR) sky makes it difficult to identify their sources. Observables such as energy spectrum, mass composition and arrival directions are affected by interactions with background…

High Energy Astrophysical Phenomena · Physics 2025-06-12 Simone Rossoni , Günter Sigl

We consider the effects of the Galactic magnetic field on the propagation of ultra high energy cosmic rays (UHECRs). By employing two methods of trajectory simulation, we investigate the possibility that UHECRs are produced within the…

Astrophysics · Physics 2007-05-23 Sean O'Neill , Angela V. Olinto , Pasquale Blasi

We study the influence of the regular component of the Galactic magnetic field (GMF) on the arrival directions of ultra-high energy cosmic rays (UHECRs). We find that, if the angular resolution of current experiments has to be fully…

Astrophysics · Physics 2009-11-13 M. Kachelriess , P. D. Serpico , M. Teshima

We investigate the possibility that near future observations of ultra-high-energy cosmic rays (UHECRs) can unveil their local source distribution, which reflects the observed local structures if their origins are astrophysical objects. In…

Astrophysics · Physics 2008-12-18 Hajime Takami , Katsuhiko Sato

While the origins of ultra-high energy (UHE) cosmic rays (CRs) remain shrouded in uncertainty, several important milestones have been reached in recent years in the experimental study of CRs with energy above 1018 eV. Within the vast…

High Energy Astrophysical Phenomena · Physics 2025-04-29 Swaraj Pratim Sarmah

The propagation trajectories of ultra-high-energy cosmic rays (UHECRs) are inevitably affected by Galactic magnetic field (GMF). Because of the inevitability, the importance of the studies of the propagation in GMF have increased to…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Hajime Takami

We study the influence of the random part of the Galactic magnetic field on the propagation of ultra high-energy cosmic rays. Within very mild approximations about the properties of the electron density fluctuations in the Galaxy we are…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-25 M. S. Pshirkov , P. G. Tinyakov , F. R. Urban

We discuss the intergalactic propagation of ultra-high-energy cosmic rays (UHECRs) with energies E \geq 10^{18.5} eV. We consider the propagation of UHECRs under the influence of the energy-dependent deflection by a weak random magnetic…

Astrophysics · Physics 2007-05-23 Abraham Achterberg , Yves A. Gallant , Colin A. Norman , Donald B. Melrose

In this work we simulate the propagation of Ultra High Energy (UHE) protons in the magnetised intergalactic medium of Galaxy Clusters (GCs). Differently from previous works on the subject, we trace proton trajectories in configurations of…

Astrophysics · Physics 2009-11-10 C. Rordorf , D. Grasso , K. Dolag

We construct a map of deflections of ultra-high energy cosmic rays by extragalactic magnetic fields using a magneto-hydrodynamical simulation of cosmic structure formation that realistically reproduces the positions of known galaxy clusters…

Astrophysics · Physics 2009-11-10 Klaus Dolag , Dario Grasso , Volker Springel , Igor Tkachev

We investigate the deflections of UHE protons by Galactic magnetic field(GMF) using four conventional GMF models in order to discuss the positional correlation between the arrival distribution of UHECRs and their sources. UHE protons coming…

Astrophysics · Physics 2009-02-10 Hajime Takami , Katsuhiko Sato

The origin, propagation, and mechanisms of acceleration of the ultra-high energy cosmic rays (UHECRs) are not yet well understood. Aiming for a better interpretation of the available experimental data, these data have to be confronted with…

High Energy Astrophysical Phenomena · Physics 2014-03-18 Rafael Alves Batista , Peter Schiffer , Guenter Sigl
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