Cosmological constraints from lensing statistics and supernovae on the cosmic equation of state
| dc.creator | Waga, Ioav | |
| dc.creator | Miceli, Ana Paula M. R. | |
| dc.date | 1998-11-30 | |
| dc.date.accessioned | 2026-07-07T10:31:49Z | |
| dc.date.available | 2026-07-07T10:31:49Z | |
| dc.description | We investigate observational constraints from lensing statistics and high-z type Ia supernovae on flat cosmological models with nonrelativistic matter and an exotic fluid with equation of state, $p_x=(m/3 -1)ρ_x$. We show that agreement with both tests at the 68% confidence level is possible if the parameter $m$ is low ($m \lesssim 0.85$) and $0.24 \lesssim Ω_{m0} \lesssim 0.38$ with lower values of $Ω_{m0}$ corresponding to higher $m$. We find that a conventional cosmological constant model with $Ω_{m0}\simeq 0.33$ is the best fit model of the combined likelihood. | |
| dc.description | 7 pages, 4 postscript figures, revtex, submitted to Phys. Rev. D | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9811460 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9811460 | |
| dc.identifier | Phys.Rev.D59:103507,1999 | |
| dc.identifier | doi:10.1103/PhysRevD.59.103507 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178544 | |
| dc.subject | Astrophysics | |
| dc.title | Cosmological constraints from lensing statistics and supernovae on the cosmic equation of state | |
| dc.type | text |