Probing for cosmological parameters with LAMOST measurement

Details Probing for cosmological parameters with LAMOST measurement Probing for cosmological parameters with LAMOST measurement

2008-06-11

arxiv.org/abs/0806.1842v2

JCAP 0810:046,2008

Astronomy and Astrophysics

Astrophysics

7 pages and 3 figures. Replaced with version accepted for publication in JCAP

Scientific paper

10.1088/1475-7516/2008/10/046

In this paper we study the sensitivity of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) project to the determination of cosmological parameters, employing the Monte Carlo Markov Chains (MCMC) method. For comparison, we first analyze the constraints on cosmological parameters from current observational data, including WMAP, SDSS and SN Ia. We then simulate the 3D matter power spectrum data expected from LAMOST, together with the simulated CMB data for PLANCK and the SN Ia from 5-year Supernovae Legacy Survey (SNLS). With the simulated data, we investigate the future improvement on cosmological parameter constraints, emphasizing the role of LAMOST. Our results show the potential of LAMOST in probing for the cosmological parameters, especially in constraining the equation-of-state (EoS) of the dark energy and the neutrino mass.

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