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.
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]
Forecasts on neutrino mass constraints from the redshift-space two-point correlation function
C. CarbonePenultimo
;
2016
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.File | Dimensione | Formato | |
---|---|---|---|
MNRAS-2016-Petracca-4208-19.pdf
accesso aperto
Tipologia:
Publisher's version/PDF
Dimensione
1.85 MB
Formato
Adobe PDF
|
1.85 MB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.