U. Seljak et E. Bertschinger, AMPLITUDE OF PRIMEVAL FLUCTUATIONS FROM COSMOLOGICAL MASS DENSITY RECONSTRUCTIONS, The Astrophysical journal, 427(2), 1994, pp. 523-526
We use the POTENT reconstruction of the mass density field in the near
by universe to estimate the amplitude of the density fluctuation power
spectrum for various cosmological models. We find sigma8OMEGA(m)0.6 =
1.3(-0.3)+0.4, almost independently of the power spectrum. This value
agrees well with the COBE normalization for the standard cold dark ma
tter model, while some alternative models predict an excessive amplitu
de compared with COBE. Flat, low OMEGA(m) models and tilted models wit
h spectral index n < 0.8 are particularly discordant.