Determining Omega from Peculiar Velocities
| dc.creator | Dekel, Avishai | |
| dc.date | 1993-09-19 | |
| dc.date.accessioned | 2026-07-07T02:18:52Z | |
| dc.date.available | 2026-07-07T02:18:52Z | |
| dc.description | The large-scale dynamics of matter is inferred from the observed peculiar velocities of galaxies via the POTENT procedure. The smoothed fields of velocity and mass-density fluctuations are recovered from the current data of about 3000 galaxies. The cosmological density parameter Omega can then be constrained in three ways: (a) by comparing the density fields of mass and galaxies, (b) by using the velocity field in voids, and (c) by investigating quasilinear deviations from Gaussian fluctuations. The results indicate a high value of Omega near unity; values in the range 0.1-0.3 are rejected with high confidence. | |
| dc.description | 9 pages including 6 figures, compressed and uuencoded PostScript 0.6Mbyte, for Cosmic Velocitiy Fields, IAP Paris July 1993 (preprint: HUJI-AST-002) (Also available by anonymous ftp from alf.huji.ac.il as pub/dekel/reviews/iap93.ps.Z of 0.44Mbyte) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9309028 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9309028 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9654 | |
| dc.subject | Astrophysics | |
| dc.title | Determining Omega from Peculiar Velocities | |
| dc.type | text |