Results 41 to 50 of about 4,214,854 (199)
The Sun's global photospheric and coronal magnetic fields : observations and models [PDF]
, 2012 2012LRSP....9....6M Funding: STFC, the Leverhulme Trust and European Commission’s Seventh Framework Programme (FP7/2007-2013) under the grant agreement SWIFF (project no.
Anthony Yeates +5 more
core +1 more source
Magnetogenesis in a Collisionless Plasma: From Weibel Instability to Turbulent Dynamo
The Astrophysical Journal, 2023 We report on a first-principles numerical and theoretical study of plasma dynamo in a fully kinetic framework. By applying an external mechanical force to an initially unmagnetized plasma, we develop a self-consistent treatment of the generation of “seed”
Muni Zhou +4 more
doaj +1 more source
Cosmology with inhomogeneous magnetic fields [PDF]
, 2007 We review spacetime dynamics in the presence of large-scale electromagnetic fields and then consider the effects of the magnetic component on perturbations to a spatially homogeneous and isotropic universe.
Roy Maartens +5 more
core +1 more source
A method of measurement of extragalactic magnetic fields by TeV gamma ray telescopes
, 2007 4 pages, 1 figureInternational audienceA method is proposed for measuring extragalactic magnetic fields in observations of TeV γ rays from distant sources.
A. Neronov, D. Semikoz
semanticscholar +2 more sources
New Insights in Extragalactic Magnetic Fields
Proceedings of the International Astronomical Union, 2018 In this contribution we introduce the motivation and goals of IAU Focus Meeting 8, “New Insights in Extragalactic Magnetic Fields”. We provide a background for the nine contributions included in these proceedings, as well as the online contributions.
L. Feretti +4 more
semanticscholar +1 more source
Diffusion of cosmic rays at EeV energies in inhomogeneous extragalactic magnetic fields [PDF]
, 2014 Ultra-high energy cosmic rays can propagate diffusively in cosmic magnetic fields. When their propagation time is comparable to the age of the universe, a suppression in the flux relative to the case in the absence of magnetic fields will occur.
R. A. Batista, G. Sigl
semanticscholar +1 more source
The Structure of Magnetic Fields in Spiral Galaxies: A Radio and Far-infrared Polarimetric Analysis [PDF]
Astrophysical Journal, 2023 We propose and apply a method to quantify the morphology of the large-scale ordered magnetic fields (B-fields) in galaxies. This method is adapted from the analysis of Event Horizon Telescope polarization data.
W. Surgent +2 more
semanticscholar +1 more source
Cio-cio-san no Yūutsu: memoirs of magnetogenesis and Turbulent Dynamo Theory [PDF]
, 2013 The origins of cosmic magnetic fields are not as yet well understood. In this dissertation we investigate, via direct numerical simulation, the temporal evolution and behaviour of magnetic fields that are generated from absolute zero initial conditions ...
Adams, Patrick
core +1 more source
Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations
The Astrophysical Journal Letters, 2023 Magnetic fields in galaxies and galaxy clusters are believed to be the result of the amplification of intergalactic seed fields during the formation of large-scale structures in the universe.
F. Aharonian +137 more
doaj +1 more source
EPJ Web of Conferences, 2013 Recently CRPropa 2.0 has been released as a public software package to simulate the extragalactic propagation of ultra-high energy nuclei. It includes deflections by extragalactic magnetic fields and all relevant interactions with ambient photon ...
Nierstenhoefer Nils +6 more
doaj +1 more source