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

Dark age consistency in the 21cm global signal

単著・共著の別

共著

著者

Fumiya Okamatsu, Teppie Minoda, Tomo Takahashi, Daisuke Yamauchi, Shintaro Yoshiura

概要

We propose a new observable for the 21 cm global signal during the dark ages, “the dark age consistency ratio,” which could serve as a critical test of models beyond the standard Λ cold dark matter (Λ⁢CDM) model, particularly in future missions using a telescope on the moon or satellite orbiting around the moon. The new observable is motivated from the fact that the shape of the functional form of the 21 cm signal against the frequency is almost cosmological-parameter independent in the Λ⁢CDM. The dark age consistency ratio takes a certain definite value in the Λ⁢CDM case, which enables us to easily falsify models beyond the standard model motivated by some particle physics and gravity theories. The new observable just needs measurements of the brightness temperature at a few frequency bands during the dark ages, and thus it allows us to test cosmological scenarios even with limited information on the 21 cm global signal at the early stage of future lunar missions.

発表雑誌等の名称

Physical Review Letters

出版者

133

131001

開始ページ

終了ページ

発行又は発表の年月

2024/09

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

https://doi.org/10.1103/PhysRevLett.133.131001

ID:NAID(CiNiiのID)

ID:PMID

URL

JGlobalID

arXiv ID

2309.06762

ORCIDのPut Code

DBLP ID