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Cosmological Parameters from the Eigenmode Analysis of the Las Campanas Redshift Survey

Takahiko Matsubara·Alexander S. Szalay·Stephen D. Landy
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Abstract

We present the first results of the Karhunen-Loève (KL) eigenmodes applied to real data of the Las Campanas Redshift Survey (LCRS) to simultaneously measure the values of the redshift-distortion parameter, $β= Ω_0^{0.6}/b$, the linearly extrapolated normalization, $σ_8^{\rm L}$, and the CDM shape parameter, $Γ= Ω_0 h$. The results of our numerical likelihood analysis indicate a low value of $β= 0.30 \pm 0.39$, a shape parameter $Γ= 0.16 \pm 0.10$, and a linearly extrapolated normalization $σ_8^{\rm L} = 0.79 \pm 0.08$, which are consistent with a low density universe, $Ω_0 \simlt 0.5$.

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Takahiko Matsubara, Alexander S. Szalay, Stephen D. Landy. 2000-04-05. Cosmological Parameters from the Eigenmode Analysis of the Las Campanas Redshift Survey. https://doi.org/10.1086/312701

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