Results 101 to 110 of about 4,214,854 (199)

Exploring Magnetic Fields in a Merging Galaxy: Comparing Polarization and Velocity Gradient in the Centaurus Galaxy

open access: yesThe Astrophysical Journal
In this study, we apply the velocity gradient technique to the merging Centaurus galaxy. We compare gradient maps derived from the PHANGS-Atacama Large Millimeter/submillimeter Array survey using CO emission lines with magnetic field tracings from dust ...
Quynh Lan Nguyen, Yue Hu, Alex Lazarian
doaj   +1 more source

A Linearly Polarized Merger Shock Down to 550 MHz: A uGMRT Study of the Merging Cluster A746

open access: yesThe Astrophysical Journal
Radio relics, arc-like polarized sources with highly aligned magnetic fields, are typically found on the outskirts of merging galaxy clusters. The magnetoionic media responsible for the significant coherence observed in radio relics remain poorly ...
Arpan Pal   +2 more
doaj   +1 more source

On the Non-Thermal Energy Content of Cosmic Structures

open access: yesGalaxies, 2016
(1) Background: the budget of non-thermal energy in galaxy clusters is not well constrained, owing to the observational and theoretical difficulties in studying these diluted plasmas on large scales; (2) Method: we use recent cosmological simulations ...
Franco Vazza   +3 more
doaj   +1 more source

The effect of magnetic fields in chemistry and biology [PDF]

open access: yes, 1997
This thesis is concerned with the effect of static and oscillatory magnetic fields on the yield of radical recombination reactions and the proposal that such effects may constitute a possible mechanism for the interaction of
Woodward, Jonathan R., Woodward, J. R.
core   +1 more source

Topological structure of the magnetic solar corona [PDF]

open access: yes, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
core   +2 more sources

Extragalactic and galactic sources: New evidence, new challenges, new opportunities

open access: yesEPJ Web of Conferences, 2013
Recent data bring in sharper focus the issue of relative contributions of galactic and extragalactic sources of ultrahigh-energy cosmic rays. On the one hand, there is some new evidence, from gamma-ray observations of blazars, that cosmic rays are ...
Kusenko Alexander
doaj   +1 more source

Effects of M dwarf magnetic fields on potentially habitable planets [PDF]

open access: yes, 2013
A.A.V. acknowledges support from the Royal Astronomical Society through a post-doctoral fellowship. J.M. acknowledges support from a fellowship of the Alexander von Humboldt foundation. P.L. acknowledges funding from a STFC scholarship.
Morin, J.   +19 more
core   +1 more source

Signal inference in Galactic astrophysics [PDF]

open access: yes, 2013
In this thesis we present a combination of methodological work with very wide focus and some specific astrophysical applications. We advance the knowledge on the Galactic interstellar medium by studying new ways of inferring select properties related to ...
Oppermann, Niels, Oppermann, N.
core   +1 more source

Rayos cósmicos ultra-energéticos y lentes magnéticas

open access: yesMomento, 2000
I discuss the effects associated to the defiection of ultra- high energy cosmic rays by galactic magnetic fields. These are of particular interest for the study and localization of extragalactic sources, which is one of the primary objectives of the ...
Esteban Roulet
doaj  

Rotation Measure Jitter: Wavelength-dependent Scatter in Rotation Measure Related to Faraday Complexity

open access: yesThe Astrophysical Journal
The relation between Faraday rotation measure (RM) and differential Faraday rotation by unresolved structure of a turbulent plasma is investigated for extragalactic radio sources.
Jeroen M. Stil
doaj   +1 more source

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