2.30 pm Monday February 28 in Curia II.
In reconstruction analysis of a galaxy redshift survey, one works backwards from the observed galaxy distribution to the primordial mass density field in the same region of space, then evolves the primordial fluctuations forward in time with an N-body code. A reconstruction incorporates assumptions about the values of cosmological parameters, the properties of primordial fluctuations, and the ``bias'' between galaxies and mass. These assumptions can be tested by comparing the reconstructed galaxy distribution to the observed distribution, and to peculiar velocity data when available. I will present the results of reconstruction analyses of the Point Source Catalog Redshift survey (PSCZ) using different assumptions regarding the density parameter (Omega) and the bias between the IRAS galaxies and the mass distributions. I will compare the reconstruction of the PSCZ galaxy distribution with the reconstructions of mock galaxy catalogs that mimic the geometry and the galaxy selection of the PSCZ survey, for which we know the true values of Omega and the bias. I will use this to constrain the values of Omega and bias that lead to acceptable reconstructions of the observed PSCZ galaxy distribution.