Application of a helicity proxy to edge-on galaxies

• 資料種別: 記事
• タイトル: Application of a helicity proxy to edge-on galaxies
• 著者・編者: Brandenburg, Axel; Furuya, Ray S.
• 著者標目: Brandenburg, Axel; Furuya, Ray S.
• 出版事項: Oxford University Press|The Royal Astronomical Society
• 出版年月日等: 2020-06-29
• 出版年（W3CDTF）: 2020-06-29
• 並列タイトル等: Helicity proxy for edge-on galaxies
• タイトル（掲載誌）: Monthly Notices of the Royal Astronomical Society
• 巻号年月日等（掲載誌）: 496 4
• 掲載巻: 496
• 掲載号: 4
• 掲載ページ: 4749-4759
• ISSN（掲載誌）: ISSN : 1365-2966
• 本文の言語コード: eng
• 件名標目: dynamo –MHD– polarization – turbulence – galaxies; individual; NGC 891 – galaxies; magnetic fields
• 対象利用者: 一般
• 一般注記: We study the prospects of detecting magnetic helicity in galaxies by observing the dust polarization of the edge-on galaxy NGC 891. Our numerical results of mean-field dynamo calculations show that there should be a large-scale component of the rotationally invariant parity-odd B polarization that we predict to be negative in the first and third quadrants, and positive in the second and fourth quadrants. The large-scale parity-even E polarization is predicted to be negative near the axis and positive further away in the outskirts. These properties are shown to be mostly a consequence of the magnetic field being azimuthal and the polarized intensity being maximum at the centre of the galaxy and are not a signature of magnetic helicity.
• 記録形式（IMT）: application/pdf
• 一次資料へのリンクURL: http://repo.lib.tokushima-u.ac.jp/files/public/11/116243/20210827103108849404/mnras_496_4_4749.pdf
• オンライン閲覧公開範囲: 限定公開
• 著作権情報: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
• 関連情報（DOI）: 10.1093/mnras/staa1795
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 徳島大学 : 徳島大学機関リポジトリ