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|Title:||Forecasts on neutrino mass constraints from the redshift-space two-point correlation function||Authors:||Petracca, F.
Angulo, R. E.
|Issue Date:||2016||Journal:||MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY||Number:||462||Issue:||4||First Page:||4208||Abstract:||We provide constraints on the accuracy with which the neutrino mass fraction, f<SUB>ν</SUB>, can be estimated when exploiting measurements of redshift-space distortions, describing in particular how the error on neutrino mass depends on three fundamental parameters of a characteristic galaxy redshift survey: density, halo bias and volume. In doing this, we make use of a series of dark matter halo catalogues extracted from the BASICC simulation. The mock data are analysed via a Markov Chain Monte Carlo likelihood analysis. We find a fitting function that well describes the dependence of the error on bias, density and volume, showing a decrease in the error as the bias and volume increase, and a decrease with density down to an almost constant value for high-density values. This fitting formula allows us to produce forecasts on the precision achievable with future surveys on measurements of the neutrino mass fraction. For example, a Euclid-like spectroscopic survey should be able to measure the neutrino mass fraction with an accuracy of δf<SUB>ν</SUB> ≈ 3.1 × 10<SUP>-3</SUP> (which is equivalent to δ∑m<SUB>ν</SUB> ≈ 0.039eV), using redshift-space clustering once all the other cosmological parameters are kept fixed to the ΛCDM case.||URI:||http://hdl.handle.net/20.500.12386/25137||URL:||https://academic.oup.com/mnras/article/462/4/4208/2589961||ISSN:||0035-8711||DOI:||10.1093/mnras/stw1948||Bibcode ADS:||2016MNRAS.462.4208P||Fulltext:||open|
|Appears in Collections:||1.01 Articoli in rivista|
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