MISC

2006年

Formation of large-scale magnetic-towers in quasars

ASTRONOMISCHE NACHRICHTEN
  • Y. Kato

327
5-6
開始ページ
450
終了ページ
453
記述言語
英語
掲載種別
DOI
10.1002/asna.200610555
出版者・発行元
WILEY-BLACKWELL

The evolution of accretion disks and the formation of jets around super-massive black holes are studied by 3-D magneto-hydrodynamic simulations. The previous studies of astrophysical jets have been concentrated on the effects of large-scale magnetic fields permeating accretion disks. However, the existence of such global magnetic fields is not evident in astrophysical objects, and their origin is not well understood. Instead, we concentrate on the effect of the magnetic fields amplified as a result of the magneto-rotational instability in the differentially rotating disk. In our simulations, we found the emergence of accumulated toroidal magnetic fields from the inner region of the disk (a so-called magnetic-tower) and also the formation of jets accelerated by the magnetic pressure of the magnetic-tower. The magnetic energy, ejected by the magnetic-tower jet during a lifetime of an active galactic nuclei (AGNs), is about 1046 erg. Our results indicate that the magnetic-tower jet can be one of the most powerful process for the formation and the evolution of the large-scale structured magnetic fields in the cluster of galaxies. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1002/asna.200610555
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000239049700018&DestApp=WOS_CPL
ID情報
  • DOI : 10.1002/asna.200610555
  • ISSN : 0004-6337
  • Web of Science ID : WOS:000239049700018

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