Results 51 to 60 of about 298 (165)
On the Non-Thermal Energy Content of Cosmic Structures
Galaxies, 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
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Exploring the Magnetic Field Geometry in NGC 891 with SOFIA/HAWC+
The Astronomical Journal, 2023 Stratospheric Observatory For Infrared Astronomy/High-resolution Airborne Wideband Camera-plus 154 μ m Far-Infrared polarimetry observations of the well-studied edge-on galaxy NGC 891 are analyzed and compared to simple disk models with ordered (planar ...
Jin-Ah Kim +2 more
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Extragalactic Cosmic Rays and Magnetic Fields: Facts and Fiction
Journal of The Korean Astronomical Society, 2004 to appear in "Cosmic Rays and Magnetic Fields in Large Scale Structure", 8 pages, 3 ...
openaire +5 more sources
The Astrophysical JournalIn 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
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A Linearly Polarized Merger Shock Down to 550 MHz: A uGMRT Study of the Merging Cluster A746
The Astrophysical JournalRadio 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
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Extragalactic and galactic sources: New evidence, new challenges, new opportunities
EPJ 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
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Extragalactic Magnetic Fields in the Extragalactic Universe and Scenarios Since Recombination for their Origin [PDF]
Highlights of Astronomy, 2002 AbstractI briefly review recent observations, some related physics and modelling, and future possibilities relating to our knowledge of the strength, structure and evolution of extragalactic magnetic fields.
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Extragalactic Magnetic Field and the Highest Energy Cosmic Rays
The Astrophysical Journal, 1995 11 pages with 3 postscript figures; LaTeX with AASTeX macros; uuencoded 3 .eps figures; submitted to the ApJL; a postscript version of the paper also available at http://astro.uchicago.edu/home/web/sjlee/pub ...
Lee, Sangjin +2 more
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Gravitational Lens Systems to probe Extragalactic Magnetic Fields
, 2008 The Faraday rotation measurements of multiply-imaged gravitational lens systems can be effectively used to probe the existence of large-scale ordered magnetic fields in lensing galaxies and galaxy clusters. The available sample of lens systems appears to suggest the presence of a coherent large-scale magnetic field in giant elliptical galaxies somewhat
Narasimha, D., Chitre, S. M.
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Rayos cósmicos ultra-energéticos y lentes magnéticas
Momento, 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
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