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Influence of Extragalactic Magnetic Fields on Extragalactic Cascade Gamma-Ray Emission
Universe, 2022 We discuss the influence of extragalactic magnetic fields on the intensity of gamma-ray emission produced in electromagnetic cascades from ultra-high energy cosmic rays propagating in extragalactic space.
Anna Uryson
doaj +5 more sources
Simulations of extragalactic magnetic fields and of their observables [PDF]
Classical and Quantum Gravity, 2017 The origin of extragalactic magnetic fields is still poorly understood. Based on a dedicated suite of cosmological magneto-hydrodynamical simulations with the ENZO code we have performed a survey of different models that may have caused present-day ...
Franco Vazza, Marcus Bruggen
exaly +4 more sources
UHECR anisotropy and extragalactic magnetic fields with the Telescope Array [PDF]
EPJ Web of Conferences, 2023 We study the energy-dependent distribution of ultra-high energy cosmic ray arrival directions with respect to luminous matter in the local Universe. We use a specially designed test statistic (TS) that is robust to uncertainties of the galactic magnetic ...
Kuznetsov Mikhail, Tinyakov Peter
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Constraints on UHECR Sources and Extragalactic Magnetic Fields from Directional Anisotropies [PDF]
The Astrophysical Journal, 2023 A dipole anisotropy in ultra–high-energy cosmic ray (UHECR) arrival directions, of extragalactic origin, is now firmly established at energies E > 8 EeV.
Teresa Bister, Glennys R. Farrar
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Constraining the Astrophysical Origin of Intergalactic Magnetic Fields [PDF]
The Astrophysical Journal, 2023 High-energy photons can produce electron–positron pairs upon interacting with the extragalactic background light. These pairs will in turn be deflected by the intergalactic magnetic field (IGMF), before possibly up-scattering photons of the cosmic ...
J. Tjemsland, M. Meyer, F. Vazza
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The redshift evolution of extragalactic magnetic fields [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 Faraday rotation studies of distant radio sources can constrain the evolution and the origin of cosmic magnetism. We use data from the LOFAR Two-Metre Sky Survey: Data Release 2 (LoTSS DR2) to study the dependence of the Faraday rotation measure (RM ...
Tessa Vernstrom +2 more
exaly +2 more sources
Proton Acceleration with Relativistic Electromagnetic Shock. [PDF]
Adv Sci (Weinh)New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Xiao T +5 more
europepmc +2 more sources
Magnetic fields and UHECR propagation [PDF]
EPJ Web of Conferences, 2023 I review the main observational tools used to detect and measure magnetic fields in the interstellar medium of our Galaxy (considering both the Galactic disk and the Galactic halo), in the interstellar medium of external galaxies, and in the ...
Ferrière Katia
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Differences in Faraday Rotation between Adjacent Extragalactic Radio Sources as a Probe of Cosmic Magnetic Fields [PDF]
Astrophysical Journal, 2019 Faraday rotation measures (RMs) of extragalactic radio sources provide information on line-of-sight magnetic fields, including contributions from our Galaxy, source environments, and the intergalactic medium (IGM).
Lawrence Rudnick +2 more
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Origin of galactic and extragalactic magnetic fields [PDF]
Reviews of Modern Physics, 2002 A variety of observations suggest that magnetic fields are present in all galaxies and galaxy clusters. These fields are characterized by a modest strength ${(10}^{\ensuremath{-}7}\char21{}{10}^{\ensuremath{-}5}\mathrm{G})$ and huge spatial scale ...
Lawrence Widrow
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