Damping of the baryon acoustic oscillations in the matter power spectrum as a probe of the growth factor

Hidenori Nomura, Kazuhiro Yamamoto, Takahiro Nishimichi

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

We investigate the damping of the baryon acoustic oscillation (BAO) signature in the matter power spectrum due to the quasi-non-linear clustering of density perturbations. On the basis of the third-order perturbation theory, we construct a fitting formula for the damping in an analytic way. This demonstrates that the damping is closely related to the growth factor and the amplitude of the matter power spectrum. Then, we investigate the feasibility of constraining the growth factor through a measurement of the damping of the BAO signature. An extension of our formula including higher order corrections of density perturbations is also discussed.

本文言語英語
論文番号031
ジャーナルJournal of Cosmology and Astroparticle Physics
2008
10
DOI
出版ステータス出版済み - 10 1 2008
外部発表はい

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

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