Stacking Clusters in the ROSAT All-Sky Survey
| dc.creator | Bartelmann, Matthias | |
| dc.creator | White, Simon D. M. | |
| dc.date | 2002-10-02 | |
| dc.date.accessioned | 2026-07-07T10:47:29Z | |
| dc.date.available | 2026-07-07T10:47:29Z | |
| dc.description | Ongoing and planned wide-area surveys at optical and infrared wavelengths should detect a few times 10^5 galaxy clusters, roughly 10% of which are expected to be at redshifts >~ 0.8. We investigate what can be learned about the X-ray emission of these clusters from the ROSAT All-Sky Survey. While individual clusters at redshifts >~ 0.5 contribute at most a few photons to the survey, a significant measurement of the mean flux of cluster subsamples can be obtained by stacking cluster fields. We show that the mean X-ray luminosity of clusters with mass M >~ 2 x 10^{14} M_sun/h selected from the Sloan Digital Sky Survey should be measurable out to redshift unity with signal-to-noise >~ 10, even if clusters are binned with Delta z=0.1 and Delta ln M ~ 0.3. For such bins, suitably chosen hardness ratio allows the mean temperature of clusters to be determined out to z ~ 0.7 with a relative accuracy of Delta T/T <~ 0.15 for M > 10^{14} M_sun/h. | |
| dc.description | 7 pages, A&A submitted | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0210067 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0210067 | |
| dc.identifier | Astron.Astrophys.407:845-854,2003 | |
| dc.identifier | doi:10.1051/0004-6361:20030991 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183553 | |
| dc.subject | Astrophysics | |
| dc.title | Stacking Clusters in the ROSAT All-Sky Survey | |
| dc.type | text |