The Astrophysical Journal, 2023 The galaxy cluster Zwicky 3146 is a sloshing cool-core cluster at z = 0.291 that in Sunyaev–Zel’dovich (SZ) imaging does not appear to exhibit significant pressure substructure in the intracluster medium.
Charles E. Romero +18 more
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Whistler-regulated Magnetohydrodynamics: Transport Equations for Electron Thermal Conduction in the High-β Intracluster Medium of Galaxy Clusters [PDF]
Astrophysical Journal, 2020 Transport equations for electron thermal energy in the high-β e intracluster medium (ICM) are developed that include scattering from both classical collisions and self-generated whistler waves. The calculation employs an expansion of the kinetic electron
J. Drake +8 more
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CHANDRA X-Ray Observations of A119: Cold Fronts and a Shock in an Evolved Off-axis Merger
The Astrophysical Journal, 2023 We present Chandra X-ray observations of the dynamically complex galaxy cluster A119 ( z = 0.044). A119 is host to two narrow-angle-tail (NAT) radio sources (0053-015 and 0053-016), whose tails are oriented parallel to each other, despite orthogonally ...
Courtney B. Watson +6 more
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Turbulent density and pressure fluctuations in the stratified intracluster medium [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Turbulent gas motions are observed in the intracluster medium (ICM). The ICM is density-stratified, with the gas density being highest at the centre of the cluster and decreasing radially outwards.
R. Mohapatra, C. Federrath, P. Sharma
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MINOT: Modeling the intracluster medium (non-)thermal content and observable prediction tools [PDF]
Astronomy & Astrophysics, 2020 In the past decade, the observations of diffuse radio synchrotron emission toward galaxy clusters revealed cosmic-ray (CR) electrons and magnetic fields on megaparsec scales.
R. Adam +9 more
semanticscholar +1 more source
Dynamical heating of the X-ray emitting intracluster medium: the roles of merger shocks and turbulence dissipation [PDF]
Monthly notices of the Royal Astronomical Society, 2020 The diffuse plasma inside clusters of galaxies has X-ray emitting temperatures of a few keV. The physical mechanisms that heat this intracluster medium (ICM) to such temperatures include the accretion shock at the periphery of a galaxy cluster, the ...
Xun Shi, D. Nagai, Han Aung, A. Wetzel
semanticscholar +1 more source
Encounters of merger and accretion shocks in galaxy clusters and their effects on intracluster medium [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Several types/classes of shocks naturally arise during formation and evolution of galaxy clusters. One such class is represented by accretion shocks, associated with deceleration of infalling baryons.
Congyao Zhang +4 more
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Mirror Acceleration of Cosmic Rays in a High-β Medium
The Astrophysical Journal, 2023 In a weakly compressible high- β medium, pitch-angle scattering and the associated scattering acceleration of cosmic rays (CRs) by anisotropic Alfvén and slow modes of magnetohydrodynamic (MHD) turbulence is inefficient.
Alex Lazarian, Siyao Xu
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Universal thermodynamic properties of the intracluster medium over two decades in radius in the X-COP sample [PDF]
Astronomy & Astrophysics, 2018 Context. The hot plasma in a galaxy cluster is expected to be heated to high temperatures through shocks and adiabatic compression. The thermodynamical properties of the gas encode information on the processes leading to the thermalization of the gas in ...
V. Ghirardini +12 more
semanticscholar +1 more source
Electron Reacceleration via Ion Cyclotron Waves in the Intracluster Medium
The Astrophysical Journal, 2023 In galaxy clusters, the intracluster medium (ICM) is expected to host a diffuse, long-lived, and invisible population of “fossil” cosmic-ray electrons (CRe) with 1–100 MeV energies.
Aaron Tran +4 more
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