Query : 2012A&A...544A..40C

2012A&A...544A..40C - Astronomy and Astrophysics, volume 544A, 40-40 (2012/8-1)

The Planck SZ Cluster Catalog: expected X-ray properties.


Abstract (from CDS):

Surveys based on the Sunyaev-Zel'dovich (SZ) effect provide a fresh view of the galaxy cluster population, one that is complementary to X-ray surveys. To better understand the relation between these two kinds of survey, we construct an empirical cluster model using scaling relations constrained by current X-ray and SZ data. We apply our model to predict the X-ray properties of the Planck SZ Cluster Catalog (PCC) and compare them to existing X-ray cluster catalogs. We find that Planck should significantly extend the depth of the previous all-sky cluster survey, performed in the early 1990s by the ROSAT satellite, and should be particularly effective at finding hot, massive clusters (T>6keV) out to redshift unity. These are rare objects, and our findings suggest that Planck could increase the observational sample at z>0.6 by an order of magnitude. This would open the way for detailed studies of massive clusters out to these higher redshifts. Specifically, we find that the majority of newly-detected Planck clusters should have X-ray fluxes 10–13erg/s/cm2<fX[0.5-2keV]<10–12erg/s/cm2, i.e., distributed over the decade in flux just below the ROSAT All Sky Survey limit. This is sufficiently bright for extensive X-ray follow-up campaigns. Once Planck finds these objects, XMM-Newton and Chandra could measure temperatures to 10% for a sample of ∼100 clusters in the range 0.5<z<1, a valuable increase in the number of massive clusters studied over this range.

Abstract Copyright:

Journal keyword(s): cosmic background radiation - cosmology: observations - galaxies: clusters: general - X-rays: galaxies: clusters - galaxies: clusters: intracluster medium

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 451 0
2 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 202 0

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