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Cosmology from the Chinese Space Station Optical Survey (CSS-OS)
Gong,Yan1; Liu,Xiangkun2; Cao,Ye1,3; Chen,Xuelei1,3,4; Fan,Zuhui2,5; Li,Ran1,3; Li,Xiao-Dong6; Li,Zhigang7,8; Zhang,Xin9; Zhan,Hu9,10
2019-10-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume883Issue:2
AbstractAbstract The Chinese Space Station Optical Survey (CSS-OS) is a planned full sky survey operated by the Chinese Space Station Telescope (CSST). It can simultaneously perform the photometric imaging and spectroscopic slitless surveys, and will probe weak and strong gravitational lensing, galaxy clustering, individual galaxies and galaxy clusters, active galactic nucleus, and so on. It aims to explore the properties of dark matter and dark energy and other important cosmological problems. In this work, we focus on two main CSS-OS scientific goals, i.e., the weak gravitational lensing (WL) and galaxy clustering surveys. We generate the mock CSS-OS data based on the observational COSMOS and zCOSMOS catalogs. We investigate the constraints on the cosmological parameters from the CSS-OS using the Markov Chain Monte Carlo method. The intrinsic alignments, galaxy bias, velocity dispersion, and systematics from instrumental effects in the CSST WL and galaxy clustering surveys are also included, and their impacts on the constraint results are discussed. We find that the CSS-OS can improve the constraints on the cosmological parameters by a factor of a few (even one order of magnitude in the optimistic case), compared to the current WL and galaxy clustering surveys. The constraints can be further enhanced when performing joint analysis with the WL, galaxy clustering, and galaxy–galaxy lensing data. Therefore, the CSS-OS is expected to be a powerful survey for exploring the universe. Since some assumptions may be still optimistic and simple, it is possible that the results from the real survey could be worse. We will study these issues in detail with the help of simulations in the future.
Keywordcosmological parameters cosmology: theory large-scale structure of universe
DOI10.3847/1538-4357/ab391e
Language英语
WOS IDIOP:0004-637X-883-2-ab391e
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28411
Collection中国科学院国家天文台
Affiliation1.Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, People’s Republic of China; gongyan@bao.ac.cn
2.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650500, People’s Republic of China
3.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
4.Centre for High Energy Physics, Peking University, Beijing 100871, People’s Republic of China
5.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People’s Republic of China
6.School of Physics and Astronomy, Sun Yat-Sen University, Guangzhou 510297, People’s Republic of China
7.Center for Astronomy and Astrophysics, Department of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, People’s Republic of China
8.IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
9.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
10.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gong,Yan,Liu,Xiangkun,Cao,Ye,et al. Cosmology from the Chinese Space Station Optical Survey (CSS-OS)[J]. The Astrophysical Journal,2019,883(2).
APA Gong,Yan.,Liu,Xiangkun.,Cao,Ye.,Chen,Xuelei.,Fan,Zuhui.,...&Zhan,Hu.(2019).Cosmology from the Chinese Space Station Optical Survey (CSS-OS).The Astrophysical Journal,883(2).
MLA Gong,Yan,et al."Cosmology from the Chinese Space Station Optical Survey (CSS-OS)".The Astrophysical Journal 883.2(2019).
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