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Revealing modified gravity signals in matter and halo hierarchical clustering
Hellwing, Wojciech A.1,2; Koyama, Kazuya1; Bose, Benjamin1; Zhao, Gong-Bo1,3
2017-07-14
Source PublicationPHYSICAL REVIEW D
Volume96Issue:2
AbstractWe use a set of N-body simulations employing a modified gravity (MG) model with Vainshtein screening to study matter and halo hierarchical clustering. As test-case scenarios we consider two normal branch Dvali-Gabadadze-Porrati (nDGP) gravity models with mild and strong growth rate enhancement. We study higher-order correlation functions xi(n)(R) up to n = 9 and associated reduced cumulants S-n(R) = xi(n)(R)/sigma(R)(2n-2). We find that the matter probability distribution functions are strongly affected by the fifth force on scales up to 50h(-1) Mpc, and the deviations from general relativity (GR) are maximized at z = 0. For reduced cumulants S-n, we find that at small scales R <= 6h(-1) Mpc the MG is characterized by lower values, with the deviation growing from 7% in the reduced skewness up to even 40% in S-5. To study the halo clustering we use a simple abundance matching and divide haloes into thee fixed number density samples. The halo two-point functions are weakly affected, with a relative boost of the order of a few percent appearing only at the smallest pair separations (r <= 5h(-1) Mpc). In contrast, we find a strong MG signal in S-n(R)'s, which are enhanced compared to GR. The strong model exhibits a > 3 sigma level signal at various scales for all halo samples and in all cumulants. In this context, we find that the reduced kurtosis to be an especially promising cosmological probe of MG. Even the mild nDGP model leaves a > 3 sigma imprint at small scales R <= 3h(-1) Mpc, while the stronger model deviates from a GR signature at nearly all scales with a significance of >5 sigma. Since the signal is persistent in all halo samples and over a range of scales, we advocate that the reduced kurtosis estimated from galaxy catalogs can potentially constitute a strong MG-model discriminatory as well as GR self-consistency test.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationEuropean Research Council(646702) ; European Research Council(646702) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; University of Portsmouth ; University of Portsmouth ; NSFC(11673025) ; NSFC(11673025) ; Royal Society-Newton Advanced Fellowship ; Royal Society-Newton Advanced Fellowship ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; STFC(ST/H008519/1) ; STFC(ST/H008519/1) ; STFC DiRAC Operations(ST/K003267/1) ; STFC DiRAC Operations(ST/K003267/1) ; Durham University ; Durham University ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30) ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30) ; European Research Council(646702) ; European Research Council(646702) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; University of Portsmouth ; University of Portsmouth ; NSFC(11673025) ; NSFC(11673025) ; Royal Society-Newton Advanced Fellowship ; Royal Society-Newton Advanced Fellowship ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; STFC(ST/H008519/1) ; STFC(ST/H008519/1) ; STFC DiRAC Operations(ST/K003267/1) ; STFC DiRAC Operations(ST/K003267/1) ; Durham University ; Durham University ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30) ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30)
DOI10.1103/PhysRevD.96.023515
WOS KeywordLARGE-SCALE STRUCTURE ; GALAXY REDSHIFT SURVEY ; BARYON ACOUSTIC-OSCILLATIONS ; DIGITAL SKY SURVEY ; COLD DARK-MATTER ; F(R) GRAVITY ; COSMIC FIELDS ; PRIMORDIAL NUCLEOSYNTHESIS ; GRAVITATIONAL-INSTABILITY ; PERTURBATION-THEORY
Indexed BySCI
Language英语
Funding OrganizationEuropean Research Council(646702) ; European Research Council(646702) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; University of Portsmouth ; University of Portsmouth ; NSFC(11673025) ; NSFC(11673025) ; Royal Society-Newton Advanced Fellowship ; Royal Society-Newton Advanced Fellowship ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; STFC(ST/H008519/1) ; STFC(ST/H008519/1) ; STFC DiRAC Operations(ST/K003267/1) ; STFC DiRAC Operations(ST/K003267/1) ; Durham University ; Durham University ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30) ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30) ; European Research Council(646702) ; European Research Council(646702) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; UK Science and Technologies Facilities Council(ST/N000668/1) ; University of Portsmouth ; University of Portsmouth ; NSFC(11673025) ; NSFC(11673025) ; Royal Society-Newton Advanced Fellowship ; Royal Society-Newton Advanced Fellowship ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; Business Innovation and Skills (BIS) National E-infrastructure(ST/K00042X/1) ; STFC(ST/H008519/1) ; STFC(ST/H008519/1) ; STFC DiRAC Operations(ST/K003267/1) ; STFC DiRAC Operations(ST/K003267/1) ; Durham University ; Durham University ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30) ; Interdisciplinary Centre for Mathematical and Computational Modelling (ICM) University of Warsaw(GA65-30)
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000405511200005
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8823
Collection星系宇宙学研究部
Affiliation1.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
2.Univ Zielona Gora, Janusz Gil Inst Astron, Ulica Szafrana 2, Zielona Gora, Poland
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Hellwing, Wojciech A.,Koyama, Kazuya,Bose, Benjamin,et al. Revealing modified gravity signals in matter and halo hierarchical clustering[J]. PHYSICAL REVIEW D,2017,96(2).
APA Hellwing, Wojciech A.,Koyama, Kazuya,Bose, Benjamin,&Zhao, Gong-Bo.(2017).Revealing modified gravity signals in matter and halo hierarchical clustering.PHYSICAL REVIEW D,96(2).
MLA Hellwing, Wojciech A.,et al."Revealing modified gravity signals in matter and halo hierarchical clustering".PHYSICAL REVIEW D 96.2(2017).
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