Probing theories of gravity with phase space-inferred potentials of galaxy clusters
文献类型：期刊论文
| 作者 | Stark, Alejo1; Miller, Christopher J.1,2; Kern, Nicholas3; Gifford, Daniel1; Zhao, Gong-Bo4,5 ; Li, Baojiu6; Koyama, Kazuya5; Nichol, Robert C.5
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2016-04-20 |
| 卷号 | 93期号:8 |
| 英文摘要 | Modified theories of gravity provide us with a unique opportunity to generate innovative tests of gravity. In Chameleon f(R) gravity, the gravitational potential differs from the weak-field limit of general relativity (GR) in a mass dependent way. We develop a probe of gravity which compares high mass clusters, where Chameleon effects are weak, to low mass clusters, where the effects can be strong. We utilize the escape velocity edges in the radius/velocity phase space to infer the gravitational potential profiles on scales of 0.3-1 virial radii. We show that the escape edges of low mass clusters are enhanced compared to GR, where the magnitude of the difference depends on the background field value vertical bar(f(R0)) over bar vertical bar. We validate our probe using N-body simulations and simulated light cone galaxy data. For a Dark Energy Spectroscopic Instrument Bright Galaxy Sample, including observational systematics, projection effects, and cosmic variance, our test can differentiate between GR and Chameleon f(R) gravity models, vertical bar(f(R0)) over bar vertical bar = 4 x 10(-6) (2 x 10(-6)) at >5 sigma (>2 sigma), more than an order of magnitude better than current cluster-scale constraints. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374551900009 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5374]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA 2.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA 3.Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Univ Portmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England 6.Univ Durham, Inst Computat Cosmol, Durham DH1 3LE, England |
| 推荐引用方式 GB/T 7714 | Stark, Alejo,Miller, Christopher J.,Kern, Nicholas,et al. Probing theories of gravity with phase space-inferred potentials of galaxy clusters[J]. PHYSICAL REVIEW D,2016,93(8). |
| APA | Stark, Alejo.,Miller, Christopher J..,Kern, Nicholas.,Gifford, Daniel.,Zhao, Gong-Bo.,...&Nichol, Robert C..(2016).Probing theories of gravity with phase space-inferred potentials of galaxy clusters.PHYSICAL REVIEW D,93(8). |
| MLA | Stark, Alejo,et al."Probing theories of gravity with phase space-inferred potentials of galaxy clusters".PHYSICAL REVIEW D 93.8(2016). |
入库方式： OAI收割
来源：国家天文台
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