Cosmological Parameter Estimation with Large Scale Structure Observations - INSPIRE

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Cosmological Parameter Estimation with Large Scale Structure Observations

Enea Di Dio
(
- Geneva U., Dept. Theor. Phys.
)
,
Francesco Montanari
(
- Geneva U., Dept. Theor. Phys.
)
,
Ruth Durrer
(
- Geneva U., Dept. Theor. Phys.
)
,
Julien Lesgourgues
(
- ITPP, Lausanne and
- CERN and
- Annecy, LAPTH
)

Aug 28, 2013

25 pages

Published in:

JCAP 01 (2014) 042

Published: Jan 27, 2014

e-Print:

1308.6186 [astro-ph.CO]

DOI:

10.1088/1475-7516/2014/01/042

Report number:

LAPTH-037-13,
CERN-PH-TH-2013-155

Experiments:

EUCLID

View in:

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Abstract: (IOP)

We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift dependent angular power spectra of galaxy number counts, Cℓ(z1,z2), 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 Cℓ(z1,z2) method. We show that for surveys with photometric redshifts the new analysis performs significantly better than the P(k) analysis. For spectroscopic redshifts, however, thelarge number of redshift bins which would beneeded 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, C0(z1,z2).

Note:

26 pages, 11 figures; few typos in published version corrected

power spectrum
redshift surveys
cosmological parameters from LSS
redshift: dependence
galaxy: power spectrum
power spectrum: angular dependence
correction: relativistic
perturbation theory
sensitivity
structure

References(43)

Figures(34)

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)
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