Cosmological parameter estimation with large scale structure observations

被引：49

作者：

Di Dio, Enea ^{[1
,2
]}

Montanari, Francesco ^{[1
,2
]}

Durrer, Ruth ^{[1
,2
]}

Lesgourgues, Julien ^{[3
,4
,5
]}

机构：

[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland

[2] Univ Geneva, Ctr Astroparticle Phys, CH-1211 Geneva 4, Switzerland

[3] Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland

[4] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[5] Univ Savoie, CNRS, LAPTh, F-74941 Annecy Le Vieux, France

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2014年 / 01期

基金：

瑞士国家科学基金会; 美国国家科学基金会;

关键词：

power spectrum; redshift surveys; cosmological parameters from LSS; DARK ENERGY; SPACE;

D O I：

10.1088/1475-7516/2014/01/042

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift dependent angular power spectra of galaxy number counts, C-l(z(1), z(2)), calculated with all relativistic corrections at first order in perturbation theory. We pay special attention to the redshift dependence of the non-linearity scale and present Fisher matrix forecasts for Euclid-like and DES-like galaxy surveys. We compare the standard P(k) analysis with the new C-l(z(1), z(2)) method. We show that for surveys with photometric redshifts the new analysis performs significantly better than the P(k) analysis. For spectroscopic redshifts, however, the large number of redshift bins which would be needed to fully profit from the redshift information, is severely limited by shot noise. We also identify surveys which can measure the lensing contribution and we study the monopole, C-0(z(1), z(2)).

引用

页数：26

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