Forecasts on neutrino mass constraints from the redshift-space two-point correlation function
Articolo
Data di Pubblicazione:
2016
Citazione:
Forecasts on neutrino mass constraints from the redshift-space two-point correlation function / F. Petracca, F. Marulli, L. Moscardini, A. Cimatti, C. Carbone, R.E. Angulo. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 0035-8711. - 462:4(2016 Nov), pp. 4208-4219. [10.1093/mnras/stw1948]
Abstract:
We provide constraints on the accuracy with which the neutrino mass fraction, f(v), 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 delta f(v) approximate to 3.1 x 10(-3) (which is equivalent to delta Sigma m(v) approximate to 0.039eV), using redshift-space clustering once all the other cosmological parameters are kept fixed to the Lambda CDM case.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
cosmological parameters; dark energy; large-scale structure of Universe; neutrinos; astronomy and astrophysics; space and planetary science
Elenco autori:
F. Petracca, F. Marulli, L. Moscardini, A. Cimatti, C. Carbone, R.E. Angulo
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