The ROSAT Deep Cluster Survey: Constraints on Cosmology
| dc.creator | Borgani, S. | |
| dc.creator | Rosati, P. | |
| dc.creator | Della Ceca, R. | |
| dc.creator | Tozzi, P. | |
| dc.creator | Norman, C. | |
| dc.date | 1999-12-17 | |
| dc.date.accessioned | 2026-07-07T02:35:05Z | |
| dc.date.available | 2026-07-07T02:35:05Z | |
| dc.description | We use the ROSAT Deep Cluster Survey (RDCS) to trace the evolution of the cluster abundance out to $z\simeq 0.8$ and constrain cosmological models. We resort to a phenomenological prescription to convert masses into $X$-ray fluxes and apply a maximum-likelihood approach to the RDCS redshift- and luminosity-distribution. We find that, even changing the shape and the evolution on the $L_{bol}$-$T_X$ relation within the observational uncertainties, a critical density Universe is always excluded at more than $3σ$ level. By assuming a non-evolving $X$-ray luminosity-temperature relation with shape $L_{bol}\propto T_X^3$, it is $Ω_m=0.35^{+0.35}_{-0.25}$ and $σ_8=0.76^{+0.38}_{-0.14}$ for flat models, with uncertainties corresponding to $3σ$ confidence levels. | |
| dc.description | 4 pages including 2 figures. To appear in ``Large Scale Structure in the X-ray Universe'', Santorini, Greece, 20-22 September 1999 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9912378 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9912378 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15488 | |
| dc.subject | Astrophysics | |
| dc.title | The ROSAT Deep Cluster Survey: Constraints on Cosmology | |
| dc.type | text |