The cool-core state of Planck SZ-selected clusters versus X-ray-selected samples: evidence for cool-core bias
نویسندگان
چکیده
منابع مشابه
Beyond the Cool Core: The Formation of Cool Core Galaxy Clusters
Why do some clusters have cool cores while others do not? In this paper, cosmological simulations, including radiative cooling and heating, are used to examine the formation and evolution of cool core (CC) and non-cool core (NCC) clusters. Numerical CC clusters at z = 0 accreted mass more slowly over time and grew enhanced cool cores via hierarchical mergers; when late major mergers occurred, t...
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To better constrain models of cool core galaxy cluster formation, we have used X-ray observations taken from the Chandra and ROSAT archives to examine the properties of cool core and non-cool core clusters, especially beyond the cluster cores. Using an optimized reduction process, we produced X-ray images, surface brightness profiles, and hardness ratio maps of 30 nearby rich Abell clusters (17...
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We report the first investigation of cool-core properties of galaxy clusters selected via their Sunyaev–Zel’dovich (SZ) effect. We use 13 galaxy clusters uniformly selected from 178 deg2 observed with the South Pole Telescope (SPT) and followed up by the Chandra X-ray Observatory. They form an approximately mass-limited sample (>3× 1014 M h−1 70 ) spanning redshifts 0.3 < z < 1.1. Using previou...
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Aims. We investigate the detection of Cool Cores (CCs) in the distant galaxy cluster population, with the purpose of measuring the CC fraction out to redshift 0.7 ≤ z < 1.4. Using a sample of nearby clusters spanning a wide range of morphologies, we define criteria to characterize cool cores, which are applicable to the high redshift sample. Methods. We analyzed azimuthally averaged surface bri...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2017
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stx493