論文

基本情報

氏名 山内 大介
氏名(カナ) ヤマウチ ダイスケ
氏名(英語) Yamauchi Daisuke
所属 理学部 物理学科
職名 講師
researchmap研究者コード B000327615
researchmap機関 岡山理科大学

題名

Full-sky formulae for weak lensing power spectra from total angular momentum method

単著・共著の別

共著

著者

Daisuke Yamauchi, Toshiya Namikawa, Atsushi Taruya

概要

We systematically derive full-sky formulae for the weak lensing power spectra generated by scalar, vector and tensor perturbations from the total angular momentum (TAM) method. Based on both the geodesic and geodesic deviation equations, we first give the gauge-invariant expressions for the deflection angle and Jacobi map as observables of the CMB lensing and cosmic shear experiments. We then apply the TAM method, originally developed in the theoretical studies of CMB, to a systematic derivation of the angular power spectra. The TAM representation, which characterizes the total angular dependence of the spatial modes projected along a line-of-sight, can carry all the information of the lensing modes generated by scalar, vector, and tensor metric perturbations. This greatly simplifies the calculation, and we present a complete set of the full-sky formulae for angular power spectra in both the E-/B-mode cosmic shear and gradient-/curl-mode lensing potential of deflection angle. Based on the formulae, we give illustrative examples of non-vanishing B-mode cosmic shear and curl-mode of deflection angle in the presence of the vector and tensor perturbations, and explicitly compute the power spectra.

発表雑誌等の名称

Journal of Cosmology and Astroparticle Physics

出版者

08

051

開始ページ

終了ページ

発行又は発表の年月

2013/08

査読の有無

有り

招待の有無

無し

記述言語

英語

掲載種別

研究論文(学術雑誌)

ISSN

ID:DOI

10.1088/1475-7516/2013/08/051

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

1305.3348

ORCIDのPut Code

DBLP ID