Simulating the cold dark matter-neutrino dipole with TianNu
文献类型：期刊论文
| 作者 | Chen, XL; Yuan, S; Zhang, TJ; Pen, UL; Yu, HR; Inman, D; Zhu, HM; Xing, ZZ ; Xing ZZ(邢志忠); Emberson, JD
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| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2017 |
| 卷号 | 95期号:8页码:83518 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.95.083518 |
| 文献子类 | Article |
| 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. |
| 电子版国际标准刊号 | 2470-0029 |
| WOS关键词 | PARAMETERS |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000399807000002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284909]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Chen, XL,Yuan, S,Zhang, TJ,et al. Simulating the cold dark matter-neutrino dipole with TianNu[J]. PHYSICAL REVIEW D,2017,95(8):83518. |
| APA | Chen, XL.,Yuan, S.,Zhang, TJ.,Pen, UL.,Yu, HR.,...&Emberson, JD.(2017).Simulating the cold dark matter-neutrino dipole with TianNu.PHYSICAL REVIEW D,95(8),83518. |
| MLA | Chen, XL,et al."Simulating the cold dark matter-neutrino dipole with TianNu".PHYSICAL REVIEW D 95.8(2017):83518. |
入库方式： OAI收割
来源：高能物理研究所
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