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Nonlinear perturbation theory with halo bias and redshift-space distortions via the Lagrangian picture
http://hdl.handle.net/2237/11327
http://hdl.handle.net/2237/113276a1a10bf-a90a-4a0b-a647-317f7e972577
名前 / ファイル | ライセンス | アクション |
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PhysRevD_78_083519.pdf (770.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-03-16 | |||||
タイトル | ||||||
タイトル | Nonlinear perturbation theory with halo bias and redshift-space distortions via the Lagrangian picture | |||||
言語 | en | |||||
著者 |
Matsubara, Takahiko
× Matsubara, Takahiko |
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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 | American Physical Society, All rights reserved. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The nonlinear perturbation theory of gravitational instability is extended to include effects of both biasing and redshift-space distortions, which are inevitable in predicting observable quantities in galaxy surveys. Weakly nonlinear effects in galaxy clustering on large scales recently attracted great interest, since the precise determination of scales of baryon acoustic oscillations is crucial to investigate the nature of dark energy by galaxy surveys. We find that a local Lagrangian bias and redshift-space distortions are naturally incorporated in our formalism of perturbation theory with a resummation technique via the Lagrangian picture. Our formalism is applicable to any biasing scheme which is local in Lagrangian space, including the halo bias as a special case. Weakly nonlinear effects on halo clustering in redshift space are analytically given.We assume only a fundamental idea of the halo model: haloes form according to the extended Press-Schechter theory, and the spatial distributions are locally biased in Lagrangian space. There is no need for assuming the spherical collapse model to follow the dynamical evolution, which is additionally assumed in standard halo prescriptions. One-loop corrections to the power spectrum and correlation function of haloes in redshift space are explicitly derived and presented. Instead of relying on expensive numerical simulations, our approach provides an analytic way of investigating the weakly nonlinear effects, simultaneously including the nonlinear biasing and nonlinear redshift-space distortions. Nonlinearity introduces a weak scale dependence in the halo bias. The scale dependence is a smooth function in Fourier space, and the bias does not critically change the feature of baryon acoustic oscillations in the power spectrum. The same feature in the correlation function is less affected by nonlinear effects of biasing. | |||||
言語 | en | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.78.083519 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 1550-7998 | |||||
書誌情報 |
en : PHYSICAL REVIEW D 巻 78, 号 8, p. 083519-083519, 発行日 2008-10 |
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値 | application/pdf | |||||
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値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/11327 | |||||
識別子タイプ | HDL |