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- W2805280151 abstract "We study galaxy distributions with Sloan Digital Sky Survey SDSS DR14 data and with simulations searching for variables that can constrain neutrino masses. To be specific, we consider the scenario of three active neutrino eigenstates 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 of galaxy counts in spheres of radii ranging from $16/h$ to $128/h$ Mpc, BAO measurements, and $h = 0.678 pm 0.009$, in various combinations, with free spectral index $n$, and free galaxy bias and galaxy bias slope, we obtain consistent measurements of $sum m_nu$. The results depend on $h$, so we have presented 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 power spectrum of linear density fluctuations $P(k)$: $N^2 = (2.09 pm 0.33) times 10^{-10}$, and $n = 1.021 pm 0.075$. The fit also returns the galaxy bias $b$ including its scale dependence." @default.
- W2805280151 created "2018-06-13" @default.
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- W2805280151 date "2018-06-04" @default.
- W2805280151 modified "2023-09-27" @default.
- W2805280151 title "Study of galaxy distributions with SDSS DR14 data and measurement of neutrino masses" @default.
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