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Using voids to unscreen modified gravity

文献类型：期刊论文

作者Falck, Bridget3; Koyama, Kazuya1; Zhao, Gong-Bo1,4; Cautun, Marius2
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018-04-01
卷号475期号:3页码:3262-3272
关键词methods: numerical dark energy large-scale structure of Universe
ISSN号0035-8711
DOI10.1093/mnras/stx3288
英文摘要The Vainshtein mechanism, present in many models of gravity, is very effective at screening dark matter haloes such that the fifth force is negligible and general relativity is recovered within their Vainshtein radii. Vainshtein screening is independent of halo mass and environment, in contrast to e.g. chameleon screening, making it difficult to test. However, our previous studies have found that the dark matter particles in filaments, walls, and voids are not screened by the Vainshtein mechanism. We therefore investigate whether cosmic voids, identified as local density minima using a watershed technique, can be used to test models of gravity that exhibit Vainshtein screening. We measure density, velocity, and screening profiles of stacked voids in cosmological N-body simulations using both dark matter particles and dark matter haloes as tracers of the density field. We find that the voids are completely unscreened, and the tangential velocity and velocity dispersion profiles of stacked voids show a clear deviation from A cold dark matter at all radii. Voids have the potential to provide a powerful test of gravity on cosmological scales.
WOS关键词GALAXY SURVEYS ; COSMIC VOIDS ; DENSITY PROFILES ; F(R) GRAVITY ; SDSS DATA ; UNIVERSALITY ; COSMOLOGY ; DYNAMICS ; CATALOG ; SPACE
资助项目Research Council of Norway (Programme for Space Research) ; European Research Council[646702] ; UK STFC grant[ST/N000668/1] ; UK STFC grant[ST/L00075X/1] ; 1000 Young Talents programme in China ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences[XDB09000000] ; ERC Advanced Investigator grant COSMIWAY[GA 267291] ; ICG ; SEPNet ; University of Portsmouth
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000427141900030
出版者OXFORD UNIV PRESS
资助机构Research Council of Norway (Programme for Space Research) ; Research Council of Norway (Programme for Space Research) ; European Research Council ; European Research Council ; UK STFC grant ; UK STFC grant ; 1000 Young Talents programme in China ; 1000 Young Talents programme in China ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; ERC Advanced Investigator grant COSMIWAY ; ERC Advanced Investigator grant COSMIWAY ; ICG ; ICG ; SEPNet ; SEPNet ; University of Portsmouth ; University of Portsmouth ; Research Council of Norway (Programme for Space Research) ; Research Council of Norway (Programme for Space Research) ; European Research Council ; European Research Council ; UK STFC grant ; UK STFC grant ; 1000 Young Talents programme in China ; 1000 Young Talents programme in China ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; ERC Advanced Investigator grant COSMIWAY ; ERC Advanced Investigator grant COSMIWAY ; ICG ; ICG ; SEPNet ; SEPNet ; University of Portsmouth ; University of Portsmouth ; Research Council of Norway (Programme for Space Research) ; Research Council of Norway (Programme for Space Research) ; European Research Council ; European Research Council ; UK STFC grant ; UK STFC grant ; 1000 Young Talents programme in China ; 1000 Young Talents programme in China ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; ERC Advanced Investigator grant COSMIWAY ; ERC Advanced Investigator grant COSMIWAY ; ICG ; ICG ; SEPNet ; SEPNet ; University of Portsmouth ; University of Portsmouth ; Research Council of Norway (Programme for Space Research) ; Research Council of Norway (Programme for Space Research) ; European Research Council ; European Research Council ; UK STFC grant ; UK STFC grant ; 1000 Young Talents programme in China ; 1000 Young Talents programme in China ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences ; ERC Advanced Investigator grant COSMIWAY ; ERC Advanced Investigator grant COSMIWAY ; ICG ; ICG ; SEPNet ; SEPNet ; University of Portsmouth ; University of Portsmouth
源URL[http://ir.bao.ac.cn/handle/114a11/37298]  
专题中国科学院国家天文台
通讯作者Falck, Bridget
作者单位1.Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg,Burnaby Rd, Portsmouth PO1 3FX, Hants, England
2.Univ Durham, Dept Phys, Inst Computat Cosmol, Durham DH1 3LE, England
3.Univ Oslo, Inst Theoret Astrophys, POB 1029, N-0315 Oslo, Norway
4.Chinese Acad Sci, Natl Astron Observ, Datun Rd, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Falck, Bridget,Koyama, Kazuya,Zhao, Gong-Bo,et al. Using voids to unscreen modified gravity[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,475(3):3262-3272.
APA Falck, Bridget,Koyama, Kazuya,Zhao, Gong-Bo,&Cautun, Marius.(2018).Using voids to unscreen modified gravity.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,475(3),3262-3272.
MLA Falck, Bridget,et al."Using voids to unscreen modified gravity".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475.3(2018):3262-3272.

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