1993/11/03 by Y. Hoffman, Hoffman, Y.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9311014
10 pages including 3 figures, compressed and uuencoded PostScript, To appear in the Proceedings of ``Cosmic Velocity Field'' ed. F.R. Bouchet, IAP Paris July 1993, HU-ASTRO93-YH1
arxiv created 1993/11/03 · arxiv updated 2009/12/01
The large scale structure of the universe is reconstructed by means of the Wiener filter and constrained realizations of Gaussian fields. The density field constructed from optically selected galaxies (Hudson \citeHudson) has been sampled out to a distance of 80\hmpc. This data set is used for the reconstruction of the underlying primordial perturbation field. A preliminary reconstruction analysis from the IRAS 1.9Jy density field is presented here for the sake of comparison. The perturbation field within a cube of 160\hmpc on the side, centered on the Local Group, and with Gaussian smoothing of length 10\hmpc is reconstructed, assuming the standard CDM model. In particular, the density field at the Zone of Avoidance is studied. A preliminary maximum likelihood analysis performed on Hudson's data shows that it is consistent with a tilted CDM with n∼ -0.5± 0.3 and σ8∼ 1.4± 0.15