Shocks in the stacked Sunyaev–Zel’dovich profiles of clusters – I. Analysis with the Three Hundred simulations

Autor: S. Adhikari, Alexander Knebe, Bhuvnesh Jain, Weiguang Cui, Chihway Chang, Jesus Vega-Ferrero, Eric J. Baxter
Přispěvatelé: European Commission, European Research Council, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), China Scholarship Council
Rok vydání: 2021
Předmět:
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Large-scale structure of universe
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
clusters: intracluster medium [Galaxies]
clusters: general [Galaxies]
01 natural sciences
Gravitational potential
Observatory
Intracluster medium
0103 physical sciences
Cluster (physics)
010303 astronomy & astrophysics
Galaxy cluster
Astrophysics::Galaxy Astrophysics
Physics
010308 nuclear & particles physics
Astronomy and Astrophysics
Observable
Radius
Astrophysics - Astrophysics of Galaxies
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
Galaxies: clusters: general
Halo
Galaxies: clusters: intracluster medium
Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
Popis: Gas infalling into the gravitational potential wells of massive galaxy clusters is expected to experience one or more shocks on its journey to becoming part of the intracluster medium (ICM). These shocks are important for setting the thermodynamic properties of the ICM and can therefore impact cluster observables such as X-ray emission and the Sunyaev–Zel’dovich (SZ) effect. We investigate the possibility of detecting signals from cluster shocks in the averaged thermal SZ profiles of galaxy clusters. Using zoom-in hydrodynamic simulations of massive clusters from the Three Hundred Project, we show that if cluster SZ profiles are stacked as a function of R/R200m, shock-induced features appear in the averaged SZ profile. These features are not accounted for in standard fitting formulae for the SZ profiles of galaxy clusters. We show that the shock features should be detectable with samples of clusters from ongoing and future SZ surveys. We also demonstrate that the location of these features is correlated with the cluster accretion rate, as well as the location of the cluster splashback radius. Analyses of ongoing and future surveys, such as SPT-3g, AdvACT, Simons Observatory, and CMB-S4, which include gas shocks will gain a new handle on the properties and dynamics of the outskirts of massive haloes, both in gas and in mass.
WC acknowledges support from the European Research Council under grant number 670193 and further acknowledges the science research grants from the China Manned Space Project with No. CMS-CSST-2021-A01 and CMS-CSST-2021-B01. AK is supported by the Ministerio de Ciencia, Innovación y Universidades (MICIU/FEDER) under research grant PGC2018-094975-C21 and further thanks Cocteau Twins for victorialand.
Databáze: OpenAIRE
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