Nonlinear reconstruction
文献类型：期刊论文
| 作者 | Zhu, Hong-Ming1,2; Yu, Yu3,4; Pen, Ue-Li5,6,7,8; Chen, Xuelei1,2,9; Yu, Hao-Ran5,10 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 96期号:12 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.96.123502 |
| 英文摘要 | We present a direct approach to nonparametrically reconstruct the linear density field from an observed nonlinear map. We solve for the unique displacement potential consistent with the nonlinear density and positive definite coordinate transformation using a multigrid algorithm. We show that we recover the linear initial conditions up to the nonlinear scale (r(delta r delta L) > 0.5 for k less than or similar to 1 h/Mpc) with minimal computational cost. This reconstruction approach generalizes the linear displacement theory to fully nonlinear fields, potentially substantially expanding the baryon acoustic oscillations and redshift space distortions information content of dense large scale structure surveys, including for example SDSS main sample and 21 cm intensity mapping initiatives. |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000416948100003 |
| 源URL | [http://119.78.226.72/handle/331011/32451]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Zhu, Hong-Ming |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanghai Jiao Tong Univ, Dept Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Univ Toronto, Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada 6.Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada 7.Canadian Inst Adv Res, CIFAR Program Gravitat & Cosmol, Toronto, ON M5G 1Z8, Canada 8.Perimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON N2L 2Y5, Canada 9.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 10.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Hong-Ming,Yu, Yu,Pen, Ue-Li,et al. Nonlinear reconstruction[J]. PHYSICAL REVIEW D,2017,96(12). |
| APA | Zhu, Hong-Ming,Yu, Yu,Pen, Ue-Li,Chen, Xuelei,&Yu, Hao-Ran.(2017).Nonlinear reconstruction.PHYSICAL REVIEW D,96(12). |
| MLA | Zhu, Hong-Ming,et al."Nonlinear reconstruction".PHYSICAL REVIEW D 96.12(2017). |
入库方式： OAI收割
来源：上海天文台
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