Active gas features in three HSC-SSP CAMIRA clusters revealed by high angular resolution analysis of MUSTANG-2 SZE and XXL X-ray observations

Scientific paper - Original scientific paper

• Author: Nobuhiro Okabe
• Author: Simon Dicker
• Author: Dominique Eckert
• Author: Tony Mroczkowski
• Author: Fabio Gastaldello
• Author: Yen-Ting Lin
• Author: Mark Devlin
• Author: Charles E Romero
• Author: Mark Birkinshaw
• Author: Craig Sarazin
• Author: Cathy Horellou
• Author: Tetsu Kitayama
• Author: Keiichi Umetsu
• Author: Mauro Sereno
• Author: Brian S Mason
• Author: John A ZuHone
• Author: Ayaka Honda
• Author: Hiroki Akamatsu
• Author: I-Non Chiu
• Author: Kotaro Kohno
• Author: Kai-Yang Lin
• Author: Elinor Medezinski
• Author: Satoshi Miyazaki
• Author: Ikuyuki Mitsuishi
• Author: Atsushi J Nishizawa
• Author: Masamune Oguri
• Author: Naomi Ota
• Author: Florian Pacaud
• Author: Marguerite Pierre
• Author: Jonathan Sievers
• Author: Vernesa Smolčić
• Author: Sara Stanchfield
• Author: Keigo Tanaka
• Author: Ryoichi Yamamoto
• Author: Chong Yang
• Author: Atsushi Yoshida
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

We present results from simultaneous modelling of high angular resolution GBT/MUSTANG-2 90 GHz Sunyaev–Zel’dovich effect (SZE) measurements and XMM-XXL X-ray images of three rich galaxy clusters selected from the HSC-SSP Survey. The combination of high angular resolution SZE and X-ray imaging enables a spatially resolved multicomponent analysis, which is crucial to understand complex distributions of cluster gas properties. The targeted clusters have similar optical richnesses and redshifts, but exhibit different dynamical states in their member galaxy distributions: a single-peaked cluster, a double-peaked cluster, and a cluster belonging to a supercluster. A large-scale residual pattern in both regular Compton-parameter y and X-ray surface brightness distributions is found in the single-peaked cluster, indicating a sloshing mode. The double-peaked cluster shows an X-ray remnant cool core between two SZE peaks associated with galaxy concentrations. The temperatures of the two peaks reach ∼20–30 keV in contrast to the cool core component of ∼2 keV, indicating a violent merger. The main SZE signal for the supercluster is elongated along a direction perpendicular to the major axis of the X-ray core, suggesting a minor merger before core passage. The SX and y distributions are thus perturbed at some level, regardless of the optical properties. We find that the integrated Compton y parameter and the temperature for the major merger are boosted from those expected by the weak-lensing mass and those for the other two clusters show no significant deviations, which is consistent with predictions of numerical simulations.

• Keywords (english): gravitational lensing: weak; galaxies: clusters: general; galaxies: clusters: intracluster medium; radio continuum: galaxies; X-rays: galaxies: clusters; Astrophysics - Cosmology and Nongalactic Astrophysics
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Monthly Notices of the Royal Astronomical Society
• Numbering: vol. 501, no. 2, pp. 1701-1732
• p-ISSN: 0035-8711
• e-ISSN: 1365-2966
• DOI: https://doi.org/10.1093/mnras/staa2330
• URN:NBN: urn:nbn:hr:217:984088
• Publication: 2021
• Document URL: https://academic.oup.com/mnras/article/501/2/1701/5903293
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2020 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. Accepted 2020 July 31. Received 2020 July 30; in original form 2019 November 21.
• Created on: 2024-09-29 11:12:48