Tracing the Universe with Clusters of Galaxies
| dc.creator | Bahcall, Neta A. | |
| dc.date | 1997-11-07 | |
| dc.date | 1997-11-09 | |
| dc.date.accessioned | 2026-07-07T02:24:57Z | |
| dc.date.available | 2026-07-07T02:24:57Z | |
| dc.description | Clusters of galaxies, the most massive virialized systems known, provide a powerful tool for studying the structure, the mass density, and the cosmology of our universe. Clusters furnish one of the best estimates of the dynamical mass density parameter on 1 Mpc scale, $Ω_{dyn}$; the best measure of the baryon density fraction in the universe; an excellent tracer of the large-scale structure of the universe; and, most recently, a powerful tracer of the evolution of structure in the universe and its unique cosmological implications. I review the above measures and show that they portray a consistent picture of the universe and place stringent constraints on cosmology. Each of these independent measures suggests a low-density universe, $Ω_{m}$ $\simeq $ 0.3 $\pm $ 0.1, with mass approximately tracing light on large scales. | |
| dc.description | 12 pages, 3 figures, Review talk presented at the 12 th Postdam Cosmology Workshop, "Large Scale Structure: Tracks and Traces", World Scientific 1998 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9711062 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9711062 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11753 | |
| dc.subject | Astrophysics | |
| dc.title | Tracing the Universe with Clusters of Galaxies | |
| dc.type | text |