English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We study galaxy distributions with Sloan Digital Sky Survey SDSS DR14 dataand with simulations searching for variables that can constrain neutrinomasses. To be specific, we consider the scenario of three active neutrinoeigenstates with approximately the same mass, so $\sum m_\nu = 3 m_\nu$.Fitting the predictions of the $\Lambda$CDM model to the Sachs-Wolfe effect,$\sigma_8$, the galaxy power spectrum $P_\textrm{gal}(k)$, fluctuations ofgalaxy counts in spheres of radii ranging from $16/h$ to $128/h$ Mpc, BAOmeasurements, and $h = 0.678 \pm 0.009$, in various combinations, with freespectral index $n$, and free galaxy bias and galaxy bias slope, we obtainconsistent measurements of $\sum m_\nu$. The results depend on $h$, so we havepresented confidence contours in the $(\sum m_\nu, h)$ plane. A global fit with$h = 0.678 \pm 0.009$ obtains $\sum m_\nu = 0.719 \pm 0.312 \textrm{(stat)}^{+0.055}_{-0.028}  \textrm{ (syst)}$ eV, and the amplitude and spectral index of the powerspectrum of linear density fluctuations $P(k)$: $N^2 = (2.09 \pm 0.33) \times10^{-10}$, and $n = 1.021 \pm 0.075$. The fit also returns the galaxy bias $b$including its scale dependence.

Study of galaxy distributions with SDSS DR14 data and measurement of neutrino masses