A Cluster Deficit in the ROSAT NEP Survey
| dc.creator | Gioia, Isabella | |
| dc.date | 1999-11-29 | |
| dc.date.accessioned | 2026-07-07T02:34:41Z | |
| dc.date.available | 2026-07-07T02:34:41Z | |
| dc.description | We have used data from the deepest region of the ROSAT All-Sky Survey, the North Ecliptic Pole (NEP) region, to produce a complete and unbiased X-ray selected sample of distant clusters to understand the nature of cluster evolution and determine implications for large scale structure models. In this contribution results are presented from a comparison between the number of the observed clusters in the NEP survey and the number of expected clusters assuming no-evolution models. There is a deficit by a factor of 2.5-4 of high luminosity, high redshift clusters with respect to the present. The evolution goes in the same direction as the original EMSS result, and the results from the CfA-IfA 160 deg^{2} survey by Vikhlini et al. 1998. | |
| dc.description | 4 pages, PostScipt file. 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/9911496 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9911496 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15342 | |
| dc.subject | Astrophysics | |
| dc.title | A Cluster Deficit in the ROSAT NEP Survey | |
| dc.type | text |