Reconstructing PSCz with a Generalized PIZA

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4 pages, 3 figures, Cosmic Flows Workshop, Victoria, Canada, July 1999, ed. S. Courteau, M. Strauss & J. Willick, ASP series

Scientific paper

We present a generalized version of the Path Interchange Zel'dovich Approximation (PIZA; Croft and Gaztanaga 1997; hereafter CG97), which may be used to reconstruct density and velocity fields from realistic galaxy redshift surveys. The original PIZA does not include the possibility of using galaxies in redshift space with a selection function. We map galaxy positions from redshift to real space and from the Local Group rest frame to the CMB rest frame. To take account of the selection function, we minimize the mass-weighted action. We apply our new method to mock galaxy catalogues and find it offers an improvement in reconstructions over linear theory. Applying PIZA to the PSCz we can obtain real space density, initial density, and peculiar velocity fields, bulk velocities and the dipole. Comparison of our reconstructed dipole with the CMB dipole gives beta=0.6

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Reconstructing PSCz with a Generalized PIZA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Reconstructing PSCz with a Generalized PIZA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reconstructing PSCz with a Generalized PIZA will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-497888

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.