Nonlinear Reconstruction of the Large Scale Structure
Abstract
The linear algorithm of the the full nonlinear large scale structure of Gaussian random fields is extended here to to perform nonlinear CRs. The procedure consists of: (1) Using linear CR of low resolution data to construct a high resolution realization of the underlying field, as if the linear theory is valid; (2) Taking the linear CR backwards in time, by the linear theory, to set initial conditions for an Nbody simulation; (3) Forwarding the field in time by an Nbody code. An intermediate step might be introduced to `linearize' the low resolution data. The nonlinear CR can be applied to any observational data set that is linearly related to the underlying field. Here it is applied to the IRAS 1.2Jy catalog using 843 data points within a sphere of $6000 Km/s$, to reconstruct the full nonlinear large scale structure of our `local' universe.
 Publication:

arXiv eprints
 Pub Date:
 July 1995
 arXiv:
 arXiv:astroph/9507084
 Bibcode:
 1995astro.ph..7084B
 Keywords:

 Astrophysics
 EPrint:
 18 pages including 4 figures,plain TeX + uuencoded postscript, submitted to ApJLetters