Matches in SemOpenAlex for { <https://semopenalex.org/work/W3208715063> ?p ?o ?g. }
- W3208715063 endingPage "1804" @default.
- W3208715063 startingPage "1779" @default.
- W3208715063 abstract "We use a simulation-based modelling approach to analyse the anisotropic clustering of the BOSS LOWZ sample over the radial range $0.4 , h^{-1} , mathrm{Mpc}$ to $63 , h^{-1} , mathrm{Mpc}$, significantly extending what is possible with a purely analytic modelling framework. Our full-scale analysis yields constraints on the growth of structure that are a factor of two more stringent than any other study on large scales at similar redshifts. We infer $f sigma_8 = 0.471 pm 0.024$ at $z approx 0.25$, and $f sigma_8 = 0.431 pm 0.025$ at $z approx 0.40$; the corresponding $Lambda$CDM predictions of the Planck CMB analysis are $0.470 pm 0.006$ and $0.476 pm 0.005$, respectively. Our results are thus consistent with Planck, but also follow the trend seen in previous low-redshift measurements of $f sigma_8$ falling slightly below the $Lambda$CDM+CMB prediction. We find that small and large radial scales yield mutually consistent values of $f sigma_8$, but there are $1-2.5 sigma$ hints of small scales ($< 10 , h^{-1} , mathrm{Mpc}$) preferring lower values for $f sigma_8$ relative to larger scales. We analyse the constraining power of the full range of radial scales, finding that most of the multipole information about $fsigma_8$ is contained in the scales $2 , h^{-1} , mathrm{Mpc} lesssim s lesssim 20 , h^{-1} , mathrm{Mpc}$. Evidently, once the cosmological information of the quasi-to-nonlinear regime has been harvested, large-scale modes contain only modest additional information about structure growth. Finally, we compare predictions for the galaxy-galaxy lensing amplitude of the two samples against measurements from SDSS and assess the lensing-is-low effect in light of our findings." @default.
- W3208715063 created "2021-11-08" @default.
- W3208715063 creator A5030253744 @default.
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- W3208715063 date "2021-10-28" @default.
- W3208715063 modified "2023-10-14" @default.
- W3208715063 title "Five per cent measurements of the growth rate from simulation-based modelling of redshift-space clustering in BOSS LOWZ" @default.
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