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Related papers: Thermodynamical properties of the ICM from hydrody…

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We present an analysis of the properties of the ICM in an extended set of cosmological hydrodynamical simulations of galaxy clusters and groups performed with the TreePM+SPH GADGET-3 code. Besides a set of non-radiative simulations, we…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 S. Planelles , S. Borgani , D. Fabjan , M. Killedar , G. Murante , G. L. Granato , C. Ragone-Figueroa , K. Dolag

The intracluster medium (ICM) of galaxy clusters encodes the impact of the physical processes that shape these massive halos, including feedback from central supermassive black holes (SMBHs). In this study, we examine the gas…

Astrophysics of Galaxies · Physics 2024-06-19 Nhut Truong , Annalisa Pillepich , Dylan Nelson , Irina Zhuravleva , Wonki Lee , Mohammadreza Ayromlou , Katrin Lehle

The comparison between observations of galaxy clusters thermo-dynamical properties and theoretical predictions suggests that non-gravitational heating needs to be added into the models. We implement an internally self-consistent heating…

Astrophysics · Physics 2015-06-24 L. Gazzola , F. R. Pearce

We measure the thermodynamic properties of cluster outer regions to provide constraints on the processes that rule the formation of large scale structures. We derived the thermodynamic properties of the intracluster gas (temperature,…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-08 Dominique Eckert , Silvano Molendi , Franco Vazza , Stefano Ettori , Stéphane Paltani

A study of the structural and scaling properties of the temperature distribution of the hot, X-ray emitting intra-cluster medium of galaxy clusters, and its dependence on dynamical state, can give insights into the physical processes…

Astrophysics · Physics 2009-11-11 G. W. Pratt , H. Boehringer , J. H. Croston , M. Arnaud , S. Borgani , A. Finoguenov , R. F. Temple

Cluster media are dynamical, not static; observational evidence suggests they are turbulent. High-resolution simulations of the intracluster media (ICMs) and of idealized, similar media help us understand the complex physics and…

Cosmology and Nongalactic Astrophysics · Physics 2011-01-24 T. W. Jones , David H. Porter , Dongsu Ryu , Jungyeon Cho

LCDM is remarkably successful in predicting the cosmic microwave background and large-scale structure, and LCDM parameters have been determined with only mild tensions between different types of observations. Hydrodynamical simulations…

Astrophysics of Galaxies · Physics 2015-05-13 Joel R. Primack

The current generation of flagship X-ray missions, Chandra and XMM-Newton, has changed our understanding of the so-called "cool core" galaxy clusters and groups. Instead of the initial idea that the thermal gas is cooling and flowing toward…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Myriam Gitti , Fabrizio Brighenti , Brian R. McNamara

We study the properties of ISM substructure and turbulence in hydrodynamic (AMR) galaxy simulations with resolutions up to 0.8 pc and 5x10^3 Msun. We analyse the power spectrum of the density distribution, and various components of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Frederic Bournaud , Bruce G. Elmegreen , Romain Teyssier , David L. Block , Ivanio Puerari

We present results from high-resolution Tree+SPH simulations of galaxy clusters and groups, aimed at studying the effect of non-gravitational heating on the entropy of the ICM. We simulate three systems, having emission-weighted temperature…

Astrophysics · Physics 2009-11-07 S. Borgani , F. Governato , J. Wadsley , N. Menci , P. Tozzi , G. Lake , T. Quinn , J. Stadel

We examine the scalings of X-ray luminosity, temperature, and dark matter or galaxy velocity dispersion for galaxy groups in an LCDM cosmological simulation, which incorporates gravity, gas dynamics, radiative cooling, and star formation,…

Astrophysics · Physics 2009-11-07 Romeel Davé , Neal Katz , David H. Weinberg

A fully three-dimensional (3D) magnetohydrodynamical (MHD) model is applied to simulate the evolution of the large-scale magnetic field in cluster galaxies interacting with the intra-cluster medium (ICM). As the model input we use a time…

Astrophysics · Physics 2011-05-23 K. Otmianowska-Mazur , B. Vollmer

We present here the first of a series of papers aimed at better understanding the evolution and properties of giant molecular clouds (GMCs) in a galactic context. We perform high resolution, three-dimensional {\sc arepo} simulations of an…

The use of galaxy clusters as cosmological probes often relies on understanding the properties and evolution of the intracluster medium (ICM). However, the ICM is a complex plasma, regularly stirred by mergers and feedback, with…

Astrophysics of Galaxies · Physics 2022-06-15 Jake S. Bennett , Debora Sijacki

The hot gas permeating galaxy clusters-the intracluster medium (ICM)-is a key tracer of their assembly history and internal dynamics. Understanding the motion of this gas provides critical insight into processes such as mergers, turbulence,…

High Energy Astrophysical Phenomena · Physics 2026-02-18 E. Gatuzz , J. Sanders , A. Liu , A. Fabian , C. Pinto , D. Eckert , S. Walker

Transport properties, such as viscosity and thermal conduction, of the hot intergalactic plasma in clusters of galaxies, are largely unknown. While for laboratory plasmas these characteristics are derived from the gas density and…

High Energy Astrophysical Phenomena · Physics 2019-06-18 I. Zhuravleva , E. Churazov , A. A. Schekochihin , S. W. Allen , A. Vikhlinin , N. Werner

Some observations such as those presented in Walker et al. show that the observed entropy profiles of the intra-cluster medium (ICM) deviate from the power-law prediction of adiabatic simulations. This implies that non-gravitational…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-17 Zhenghao Zhu , Haiguang Xu , Dan Hu , Chenxi Shan , Yongkai Zhu , Shida Fan , Yuanyuan Zhao , Liyi Gu , Xiang-Ping Wu

The circumgalactic medium (CGM) in $\gtrsim 10^{12}$ $\mathrm{M}_{\odot}$ halos is dominated by a hot phase ($T \gtrsim 10^{6}$ K). While many models exist for the hot gas structure, there is as yet no consensus. We compare cooling flow…

The thermodynamic properties of the hot plasma in galaxy clusters retains information on the processes leading to the formation and evolution of the gas in their deep, dark matter potential wells. These processes are dictated not only by…

Cosmology and Nongalactic Astrophysics · Physics 2021-03-31 V. Ghirardini , E. Bulbul , R. Kraft , M. Bayliss , B. Benson , L. Bleem , S. Bocquet , M. Calzadilla , D. Eckert , W. Forman , J. Gonzalez , G. Khullar , G. Mahler , M. McDonald

Galaxy cluster mass determinations achieved using X-ray and Sunyaev-Zel'dovich data combined with the assumption of hydrostatic equilibrium are generally biased. The bias exists for two main reasons: non-thermal pressure forces are expected…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-02 Davide Martizzi , Harrison Agrusa