Results 51 to 60 of about 4,214,854 (199)
Extragalactic magnetic fields unlikely generated at the electroweak phase transition [PDF]
, 2014 In this paper we show that magnetic fields generated at the electroweak phase transition are most likely too weak to explain the void magnetic fields apparently observed today unless they have considerable helicity.
Jacques M. Wagstaff, R. Banerjee
semanticscholar +1 more source
Fast Radio Bursts as Probes of Magnetic Fields in Galaxies at z < 0.5
The Astrophysical Journal, 2023 We present a sample of nine fast radio bursts (FRBs) from which we derive magnetic field strengths of the host galaxies represented by normal, z < 0.5 star-forming galaxies with stellar masses M _* ≈ 10 ^8 –10 ^10.5 M _⊙ .
Alexandra G. Mannings +8 more
doaj +1 more source
, 2017 We present a novel numerical model for the propagation of ultra-high energy charged particles in the intergalactic medium, assumed to have a cellular structure of coherent magnetic fields. We take into account the diffusion of ultrarelativistic particles
M. D. de Oliveira, R. Costa
semanticscholar +1 more source
The need for hard spectra sources of nearby heavy cosmic rays
EPJ Web of Conferences, 2013 Using recent Auger energy spectrum and composition analysis results, an investigation is carried out into the requirements placed on the UHECR sources.
Taylor Andrew M.
doaj +1 more source
On irregularities in the cosmic ray spectrum of \(10^{16}-10^{18}\) eV range
SciPost Physics Proceedings, 2023 Existing small, medium and large arrays for the study of cosmic rays of ultra-high energies are aimed for obtaining information about our galaxy and extragalactic space, namely to search and study astronomical objects that produce the flux of ...
Stanislav P. Knurenko, Igor S. Petrov
doaj +1 more source
Time dependence of AGN pair echo, and halo emission as a probe of weak extragalactic magnetic fields
, 2017 Gamma-rays with energy exceeding 100 GeV emitted by extragalactic sources initiate cascades in the intergalactic medium. The angular and temporal distribution of the cascade photons that arrive at the Earth depend on the strength and configuration of ...
F. Oikonomou, K. Murase, K. Kotera
semanticscholar +1 more source
On the vertigo due to static magnetic fields. [PDF]
, 2013 Vertigo is sometimes experienced in and around MRI scanners. Mechanisms involving stimulation of the vestibular system by movement in magnetic fields or magnetic field spatial gradients have been proposed.
Antunes, Andre +14 more
core +2 more sources
DEFROST: Detecting Excess in Faraday Rotation thrOugh Sophisticated analysis Techniques
Astronomy & AstrophysicsAims. Understanding the origin and evolution of cosmological magnetic fields requires a detailed knowledge of the strength of magnetic fields in different extragalactic environments.
Vacca Valentina +9 more
doaj +1 more source
Sensitivity of Cross-Correlation Studies by Using Xmax Information
Galaxies, 2022 The investigation about cosmic-ray sources through the study of the arrival direction of the particles is completely dependent on primary mass compositions.
Cynthia V. Ventura +3 more
doaj +1 more source
FERMI/LAT OBSERVATIONS OF 1ES 0229+200: IMPLICATIONS FOR EXTRAGALACTIC MAGNETIC FIELDS AND BACKGROUND LIGHT [PDF]
, 2011 We report the observation in the GeV band of the blazar 1ES 0229+200, which over recent years has become one of the primary sources used to put constraints on the extragalactic background light (EBL) and extragalactic magnetic field (EGMF).
Ievgen Vovk +3 more
semanticscholar +1 more source