Active gas features in three HSC-SSP CAMIRA clusters revealed by high angular resolution analysis of MUSTANG-2 SZE and XXL X-ray observations
Artikel i vetenskaplig tidskrift, 2021

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 similar to 20-30 keV in contrast to the cool core component of similar to 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 S-X 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.

X-rays: galaxies: clusters

galaxies: clusters: intracluster medium

gravitational lensing: weak

galaxies: clusters: general

radio continuum: galaxies


Nobuhiro Okabe

Hiroshima University

Simon Dicker

University of Pennsylvania

Dominique Eckert

Université de Genève

Tony Mroczkowski

European Southern Observatory (ESO)

Fabio Gastaldello

Istituto nazionale di astrofisica (INAF)

Yen-Ting Lin

Academia Sinica

Mark Devlin

University of Pennsylvania

Charles E. Romero

University of Pennsylvania

Mark Birkinshaw

University of Bristol

Craig Sarazin

University of Virginia

Cathy Horellou

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Tetsu Kitayama

Toho University

Keiichi Umetsu

Academia Sinica

Mauro Sereno

Istituto Nazionale di Fisica Nucleare

INAF OAS Bologna

Brian S. Mason

National Radio Astronomy Observatory

John A. ZuHone

Harvard-Smithsonian Center for Astrophysics

Ayaka Honda

Hiroshima University

Hiroki Akamatsu

Netherlands Institute for Space Research (SRON)

I-Non Chiu

Academia Sinica

Kotaro Kohno

University of Tokyo

Kai-Yang Lin

Academia Sinica

Elinor Medezinski

Princeton University

Satoshi Miyazaki

National Astronomical Observatory of Japan

Ikuyuki Mitsuishi

Nagoya University

Atsushi J. Nishizawa

Nagoya University

Masamune Oguri

University of Tokyo

Naomi Ota

Nara Women's University

Florian Pacaud

Universität Bonn

Marguerite Pierre

Université Paris-Saclay

Jonathan Sievers

McGill University

Vernesa Smolcic

Sveučilište u Zagrebu

Sara Stanchfield

University of Pennsylvania

Keigo Tanaka

Kanazawa University

Ryoichi Yamamoto

Hiroshima University

Chong Yang

Hiroshima University

Atsushi Yoshida

Nagoya University

Monthly Notices of the Royal Astronomical Society

0035-8711 (ISSN) 1365-2966 (eISSN)

Vol. 501 2 1701-1732


Astronomi, astrofysik och kosmologi

Atom- och molekylfysik och optik

Annan fysik



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