Cosmology from the Chinese Space Station Optical Survey (CSS-OS)

Cosmology from the Chinese House Station Optical Study (CSS-OS)

Standing Report e-Print archive
Posted: Wednesday, January sixteen, 2019

Yan Gong, Xiangkun Liu, Ye Cao, Xuelei Chen, Zuhui Enthusiast, Ran Li, Xiao-Dong Li, Zhigang Li, Xin Zhang, Hu Zhan
(Submitted on 15 Jan 2019)

The Chinese Place Station Optical Study (CSS-OS) is a prepared entire sky study operated by the Chinese House Station Telescope (CSST). It can at the same time perform the photometric imaging and spectroscopic slitless surveys, and will probe weak and potent gravitational lensing, galaxy clustering, individual galaxies and galaxy clusters, lively galactic nucleus (AGNs), and so on. It aims to discover the properties of dim subject and darkish energy and other crucial cosmological complications. In this perform, we target on two major CSS-OS scientific targets, i.e. the weak gravitational lensing (WL) and galaxy clustering surveys. We crank out the mock CSS-OS facts based mostly on the observational COSMOS and zCOSMOS catalogs. We investigate the constraints on the cosmological parameters from the CSS-OS making use of the Markov Chain Monte Carlo (MCMC) process. The intrinsic alignments, galaxy bias, velocity dispersion, and systematics from instrumental effects in the CSST WL and galaxy clustering surveys are also bundled, and their impacts on the constraint effects are talked over. We come across that the CSS-OS can boost the constraints on the cosmological parameters by a factor of a handful of (even a single purchase of magnitude in the optimistic situation), as opposed to the present WL and galaxy clustering surveys. The constraints can be more enhanced when accomplishing joint examination with the WL, galaxy clustering, and galaxy-galaxy lensing information. The CSS-OS is anticipated to be a effective survey for discovering the Universe.

Feedback:    18 webpages, 19 figures, two tables

Subjects:    Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Cite as:    arXiv:1901.04634 [astro-ph.CO] (or arXiv:1901.04634v1 [astro-ph.CO] for this edition)
Submission history
From: Yan Gong [look at e mail]
[v1] Tue, fifteen Jan 2019 01:54:fifty nine UTC (2,841 KB) muscles/1901.04634

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