Redshift-space density versus real-space velocity comparison
| dc.creator | Chodorowski, Michal | |
| dc.date | 1999-08-27 | |
| dc.date.accessioned | 2026-07-07T02:32:55Z | |
| dc.date.available | 2026-07-07T02:32:55Z | |
| dc.description | I propose to compare the redshift-space density field directly to the REAL-SPACE velocity field. Such a comparison possesses all of the advantages of the conventional redshift-space analyses, while at the same time it is free of their disadvantages. In particular, the model-dependent reconstruction of the density field in real space is unnecessary, and so is the reconstruction of the velocity field in redshift space. The redshift-space velocity field can be reconstructed only at the linear order, because only at this order it is irrotational. Unlike the conventional redshift-space density--velocity comparisons, the comparison proposed here does not have to be restricted to the linear regime. Nonlinear effects can then be used to break the Omega-bias degeneracy plaguing the analyses based on the linear theory. I present a degeneracy-breaking method for the case of nonlinear but local bias. | |
| dc.description | 4 pages, no figures, uses paspconf.sty; to appear in the proceedings of the Cosmic Flows Workshop, Victoria, Canada, July 1999, ed. S. Courteau, M. Strauss & J. Willick, ASP series. For a more detailed discussion of this problem, see astro-ph/9908246 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9908299 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9908299 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14643 | |
| dc.subject | Astrophysics | |
| dc.title | Redshift-space density versus real-space velocity comparison | |
| dc.type | text |