Can I read Amplitude of Primeval Fluctuations from Cosmological Mass Density Reconstructions on EtoBox?

Amplitude of Primeval Fluctuations from Cosmological Mass Density Reconstructions by Seljak, Uros; Bertschinger, Edmund is a scholarly article available to read on EtoBox.

What is Amplitude of Primeval Fluctuations from Cosmological Mass Density Reconstructions about?

We use the POTENT reconstruction of the mass density field in the nearby universe to estimate the amplitude of the density fluctuation power spectrum for various cosmological models. We find sigma_8\Omega_m^{0.6}= 1.3^{+0.4}_{-0.3}, almost independently of the power spectrum. This value agrees well with the COBE normalization for the standard CDM model, while some alternative models predict an excessive amplitude compared with COBE. Flat low \Omega_m models and tilted models with spectral index n<0.8 are particularly discordant.

Author

Seljak, Uros; Bertschinger, Edmund

Published

1993

Language

EN