Simulating the cold dark matter-neutrino dipole with TianNu
文献类型：期刊论文
| 作者 | Inman, Derek1,2; Yu, Hao-Ran1,3; Zhu, Hong-Ming4,5 ; Emberson, J. D.6; Pen, Ue-Li1,7,8,9; Zhang, Tong-Jie4,10,11; Yuan, Shuo12; Chen, Xuelei5; Xing, Zhi-Zhong13,14
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2017-04-20 |
| 卷号 | 95期号:8 |
| 英文摘要 | Measurements of neutrino mass in cosmological observations rely on two-point statistics that are hindered by significant degeneracies with the optical depth and galaxy bias. The relative velocity effect between cold dark matter and neutrinos induces a large scale dipole in the matter density field and may be able to provide orthogonal constraints to standard techniques. We numerically investigate this dipole in the TianNu simulation, which contains cold dark matter and 50 meV neutrinos. We first compute the dipole using a new linear response technique where we treat the displacement caused by the relative velocity as a phase in Fourier space and then integrate the matter power spectrum over redshift. Then, we compute the dipole numerically in real space using the simulation density and velocity fields. We find excellent agreement between the linear response and N-body methods. Utilizing the dipole as an observational tool requires two tracers of the matter distribution that are differently biased with respect to the neutrino density. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 关键词[WOS] | PARAMETERS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000399807000002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8855]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada 2.Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada 3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 5.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China 6.Argonne Natl Lab, ALCF Div, Lemont, IL 60439 USA 7.Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4, Canada 8.Canadian Inst Adv Res, CIFAR Program Gravitat & Cosmol, Toronto, ON M5G 1Z8, Canada 9.Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada 10.Dezhou Univ, Shandong Prov Key Lab Biophys, Sch Phys & Elect Informat, Sch Informat Management, Dezhou 253023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Inman, Derek,Yu, Hao-Ran,Zhu, Hong-Ming,et al. Simulating the cold dark matter-neutrino dipole with TianNu[J]. PHYSICAL REVIEW D,2017,95(8). |
| APA | Inman, Derek.,Yu, Hao-Ran.,Zhu, Hong-Ming.,Emberson, J. D..,Pen, Ue-Li.,...&Xing, Zhi-Zhong.(2017).Simulating the cold dark matter-neutrino dipole with TianNu.PHYSICAL REVIEW D,95(8). |
| MLA | Inman, Derek,et al."Simulating the cold dark matter-neutrino dipole with TianNu".PHYSICAL REVIEW D 95.8(2017). |
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来源：国家天文台
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