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 lensing reconstruction of gradient and curl modes from CMB maps

単著・共著の別

共著

著者

Toshiya Namikawa, Daisuke Yamauchi, Atsushi Taruya

概要

We present a method of lensing reconstruction on the full sky, by extending the optimal quadratic estimator proposed by Okamoto & Hu (2003) to the case including the curl mode of deflection angle. The curl mode is induced by the vector and tensor metric perturbations, and the reconstruction of the curl mode would be a powerful tool to not only check systematics in the estimated gradient mode but also probe any vector and tensor sources. We find that the gradient and curl modes can be reconstructed separately, thanks to the distinctive feature in the parity symmetry between the gradient and curl modes. We compare our estimator with the flat-sky estimator proposed by Cooray et al (2005). Based on the new formalism, the expected signal-to-noise ratio of the curl mode produced by the primordial gravitational-waves and a specific model of cosmic strings are estimated, and prospects for future observations are discussed.

発表雑誌等の名称

Journal of Cosmology and Astroparticle Physics

出版者

01

007

開始ページ

終了ページ

発行又は発表の年月

2012/01

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

10.1088/1475-7516/2012/01/007

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

1110.1718

ORCIDのPut Code

DBLP ID