Reconstructing PSCz with a Generalised PIZA

Abstract: We present a generalized version of the Path Interchange Zel´dovichApproximation (PIZA), for use with realistic galaxy redshift surveys. PIZA is alinear particle-based Lagrangian method which uses the present day positions ofgalaxies to reconstruct both the initial density field and the present daypeculiar velocity field. We generalize the method by m..