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류동수

Ryu, Dongsu
Astrophysics Lab.
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dc.citation.endPage 912 -
dc.citation.number 5878 -
dc.citation.startPage 909 -
dc.citation.title SCIENCE -
dc.citation.volume 320 -
dc.contributor.author Ryu, Dongsu -
dc.contributor.author Kang, Hyesung -
dc.contributor.author Cho, Jungyeon -
dc.contributor.author Das, Santabrata -
dc.date.accessioned 2023-12-22T08:40:18Z -
dc.date.available 2023-12-22T08:40:18Z -
dc.date.created 2015-08-27 -
dc.date.issued 2008-05 -
dc.description.abstract The nature and origin of turbulence and magnetic fields in the intergalactic space are important problems that are yet to be understood. We propose a scenario in which turbulent-flow motions are induced via the cascade of the vorticity generated at cosmological shocks during the formation of the large-scale structure. The turbulence in turn amplifies weak seed magnetic fields of any origin. Supercomputer simulations show that the turbulence is subsonic inside clusters and groups of galaxies, whereas it is transonic or mildly supersonic in filaments. Based on a turbulence dynamo model, we then estimated that the average magnetic field strength would be a few microgauss (mu G) inside clusters and groups, approximately 0.1 mu G around clusters and groups, and approximately 10 nanogauss in filaments. Our model presents a physical mechanism that transfers the gravitational energy to the turbulence and magnetic field energies in the large-scale structure of the universe -
dc.identifier.bibliographicCitation SCIENCE, v.320, no.5878, pp.909 - 912 -
dc.identifier.doi 10.1126/science.1154923 -
dc.identifier.issn 0036-8075 -
dc.identifier.scopusid 2-s2.0-46449128609 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/17426 -
dc.identifier.url http://www.sciencemag.org/content/320/5878/909.full -
dc.identifier.wosid 000255868300036 -
dc.language 영어 -
dc.publisher AMER ASSOC ADVANCEMENT SCIENCE -
dc.title Turbulence and magnetic fields in the large-scale structure of the universe -
dc.type Article -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus COSMOLOGICAL SHOCK-WAVES -
dc.subject.keywordPlus FARADAY-ROTATION -
dc.subject.keywordPlus GALAXY CLUSTERS -
dc.subject.keywordPlus ACCELERATION -
dc.subject.keywordPlus SIMULATIONS -
dc.subject.keywordPlus ORIGIN -

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