On the Challenges of Cosmic-Ray Proton Shock Acceleration in the Intracluster Medium [PDF]
New Astronomy, 2021 Galaxy clusters host the largest particle accelerators in the Universe: Shock waves in the intracluster medium (ICM), a hot and ionised plasma, that accelerate particles to high energies.
D. Wittor
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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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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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Turbulence in stratified atmospheres: implications for the intracluster medium [PDF]
Monthly notices of the Royal Astronomical Society, 2020 The gas motions in the intracluster medium (ICM) are governed by turbulence. However, since the ICM has a radial profile with the centre being denser than the outskirts, ICM turbulence is stratified.
R. Mohapatra, C. Federrath, P. Sharma
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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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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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INTRACLUSTER MEDIUM REHEATING BY RELATIVISTIC JETS [PDF]
The Astrophysical Journal, 2011 Accepted for publication in ...
Perucho, Manel +2 more
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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
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THE ENRICHMENT OF THE INTRACLUSTER MEDIUM [PDF]
The Astrophysical Journal, 2009 To determine the relative contributions of galactic and intracluster stars to the enrichment of the intracluster medium (ICM), we present X-ray surface brightness, temperature, and Fe abundance profiles for a set of twelve galaxy clusters for which we have extensive optical photometry.
Sivanandam, Suresh +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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