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  1. I200 高等研究院
  2. I200a 雑誌掲載論文
  3. 学術雑誌

Intrinsic galaxy alignment from angular dependent primordial non-Gaussianity

http://hdl.handle.net/2237/00029075
http://hdl.handle.net/2237/00029075
343bc1c4-802f-4eed-99a5-ba9f4017ba57
名前 / ファイル ライセンス アクション
anisoNG.pdf anisoNG (942.3 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2018-11-19
タイトル
タイトル Intrinsic galaxy alignment from angular dependent primordial non-Gaussianity
言語 en
著者 Kogai, Kazuhiro

× Kogai, Kazuhiro

WEKO 88003

en Kogai, Kazuhiro

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Matsubara, Takahiko

× Matsubara, Takahiko

WEKO 88004

en Matsubara, Takahiko

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Nishizawa, Atsushi J.

× Nishizawa, Atsushi J.

WEKO 88005

en Nishizawa, Atsushi J.

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Urakawa, Yuko

× Urakawa, Yuko

WEKO 88006

en Urakawa, Yuko

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 This is an author-created, un-copyedited version of an article published in {Journal of Cosmology and Astroparticle Physics}. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at {https://doi.org/10.1088/1475-7516/2018/08/014}.
キーワード
主題Scheme Other
主題 Primordial non-Gaussianity
キーワード
主題Scheme Other
主題 Scale dependent bias
キーワード
主題Scheme Other
主題 Intrinsic galaxy alignment
抄録
内容記述 In this paper, we explore a detectable imprint of massive fields with integer spins s ≥ 2, which may be predicted from string theory. It was shown that such a massive non-zero spin field can generate the squeezed primordial bispectrum which depends on the angle between the two wavenumbers. We show that considering the contribution from the massive spin-2 field, the angular dependent primordial non-Gaussianity (PNG) yields a strong scale dependence in the bias parameter for the galaxy alignment, which becomes prominent at small scales. As another example of an angular dependent PNG, we also consider the primordial bispectrum where the angular dependence was introduced by a vector field, while breaking the global rotational symmetry. As a consequence, we find that the B-mode cosmic shear and non-diagonal components do not vanish. These aspects provide qualitative differences from the PNG sourced by massive non-zero spin fields.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2019-08-13
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 IOP publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1088/1475-7516/2018/08/014
ISSN(Online)
収録物識別子タイプ EISSN
収録物識別子 1475-7516
書誌情報 en : Journal of Cosmology and Astroparticle Physics

巻 2018, 号 08, p. 014-014, 発行日 2018-08-13
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