Constraints on the Mass, Concentration, and Nonthermal Pressure Support of Six CLASH Clusters from a Joint Analysis of X-Ray, SZ, and Lensing Data

We present a joint analysis of Chandra X-ray observations, Bolocam thermal Sunyaev-Zel'dovich (SZ) effect observations, Hubble Space Telescope (HST) strong-lensing data, and HST and Subaru Suprime-Cam weak-lensing data. The multiwavelength data set is used to constrain parametric models for the...

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Bibliographic Details
Published in:The Astrophysical journal 2018-07, Vol.861 (1), p.71
Main Authors: Siegel, Seth R., Sayers, Jack, Mahdavi, Andisheh, Donahue, Megan, Merten, Julian, Zitrin, Adi, Meneghetti, Massimo, Umetsu, Keiichi, Czakon, Nicole G., Golwala, Sunil R., Postman, Marc, Koch, Patrick M., Koekemoer, Anton M., Lin, Kai-Yang, Melchior, Peter, Molnar, Sandor M., Moustakas, Leonidas, Mroczkowski, Tony K., Pierpaoli, Elena, Shitanishi, Jennifer
Format: Article
Language:English
Subjects:
Astrophysics
Cluster analysis
Computational fluid dynamics
Computer simulation
Constraint modelling
Datasets
Galactic clusters
Galaxies
galaxies: clusters: general
galaxies: clusters: individual (Abell 383, Abell 611, 1423.8+2404, MACS J1532.8+3021)
galaxies: clusters: intracluster medium
Hubble Space Telescope
Red shift
Space telescopes
Supernova
Symmetry
Turbulence
Turbulent flow
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Summary:We present a joint analysis of Chandra X-ray observations, Bolocam thermal Sunyaev-Zel'dovich (SZ) effect observations, Hubble Space Telescope (HST) strong-lensing data, and HST and Subaru Suprime-Cam weak-lensing data. The multiwavelength data set is used to constrain parametric models for the distribution of dark and baryonic matter in a sample of six massive galaxy clusters selected from the Cluster Lensing And Supernova survey with Hubble (CLASH). For five of the six clusters, the multiwavelength data set is well described by a relatively simple model that assumes spherical symmetry, hydrostatic equilibrium, and entirely thermal pressure support. The joint analysis yields considerably better constraints on the total mass and concentration of the clusters compared to analysis of any one data set individually. The resulting constraints are consistent with simulation-based predictions for the concentration-mass relation. The subsample of five galaxy clusters is used to place an upper limit on the fraction of pressure support in the intracluster medium (ICM) due to nonthermal processes, such as turbulence and bulk flow of the gas. We constrain the nonthermal pressure fraction at r500c to be
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/aac5f8