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류동수

Ryu, Dongsu
Astrophysics Lab.
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dc.citation.endPage 10 -
dc.citation.number 1 -
dc.citation.startPage 1 -
dc.citation.title ASTROPHYSICAL JOURNAL -
dc.citation.volume 792 -
dc.contributor.author Ideguchi, Shinsuke -
dc.contributor.author Tashiro, Yuichi -
dc.contributor.author Akahori, Takuya -
dc.contributor.author Takahashi, Keitaro -
dc.contributor.author Ryu, Dongsu -
dc.date.accessioned 2023-12-22T02:13:41Z -
dc.date.available 2023-12-22T02:13:41Z -
dc.date.created 2014-09-02 -
dc.date.issued 2014-09 -
dc.description.abstract The Faraday dispersion function (FDF), which can be derived from an observed polarization spectrum by Faraday rotation measure synthesis, is a profile of polarized emissions as a function of Faraday depth. We study intrinsic FDFs along sight lines through face-on Milky Way like galaxies by means of a sophisticated galactic model incorporating three-dimensional MHD turbulence, and investigate how much information the FDF intrinsically contains. Since the FDF reflects distributions of thermal and cosmic-ray electrons as well as magnetic fields, it has been expected that the FDF could be a new probe to examine internal structures of galaxies. We, however, find that an intrinsic FDF along a sight line through a galaxy is very complicated, depending significantly on actual configurations of turbulence. We perform 800 realizations of turbulence and find no universal shape of the FDF even if we fix the global parameters of the model. We calculate the probability distribution functions of the standard deviation, skewness, and kurtosis of FDFs and compare them for models with different global parameters. Our models predict that the presence of vertical magnetic fields and the large-scale height of cosmic-ray electrons tend to make the standard deviation relatively large. In contrast, the differences in skewness and kurtosis are relatively less significant. -
dc.identifier.bibliographicCitation ASTROPHYSICAL JOURNAL, v.792, no.1, pp.1 - 10 -
dc.identifier.doi 10.1088/0004-637X/792/1/51 -
dc.identifier.issn 0004-637X -
dc.identifier.scopusid 2-s2.0-84906233259 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/5601 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84906233259 -
dc.identifier.wosid 000341172100051 -
dc.language 영어 -
dc.publisher IOP PUBLISHING LTD -
dc.title Faraday dispersion functions of galaxies -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Astronomy & Astrophysics -
dc.relation.journalResearchArea Astronomy & Astrophysics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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