How Merger-driven Gas Motions in Galaxy Clusters Can Turn AGN Bubbles into Radio Relics

@article{Zuhone2020HowMG,
  title={How Merger-driven Gas Motions in Galaxy Clusters Can Turn AGN Bubbles into Radio Relics},
  author={John A. Zuhone and Maxim Markevitch and Rainer Weinberger and Paul E. J. Nulsen and K Ehlert},
  journal={The Astrophysical Journal},
  year={2020},
  volume={914}
}
Radio relics in galaxy clusters are extended synchrotron sources produced by cosmic-ray electrons in the microgauss magnetic field. Many relics are found in the cluster periphery and have a cluster-centric, narrow arc-like shape, which suggests that the electrons are accelerated or reaccelerated by merger shock fronts propagating outward in the intracluster plasma. In the X-ray, some relics do exhibit such shocks at the location of the relic, but many do not. We explore the possibility that… 
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References

SHOWING 1-10 OF 63 REFERENCES
Implementation of Cosmic Ray Energy Spectrum (CRESP) Algorithm in PIERNIK MHD Code. I. Spectrally Resolved Propagation of Cosmic Ray Electrons on Eulerian Grids
We present an efficient algorithm to follow spectral evolution of cosmic rays (CR) coupled with an MHD system on Eulerian grids. The algorithm is designed for studies of CR energy spectrum evolution
Morphology of radio relics – I. What causes the substructure of synchrotron emission?
High-resolution radio observations of cluster radio relics often show complex spatial and spectral features. However, it is not clear what these features reveal about the underlying magnetic field
Array programming with NumPy
TLDR
How a few fundamental array concepts lead to a simple and powerful programming paradigm for organizing, exploring and analysing scientific data is reviewed.
A Parameter Space Exploration of Galaxy Cluster Mergers. II. Effects of Magnetic Fields
The hot intracluster plasma in clusters of galaxies is weakly magnetized. Mergers between clusters produce gas compression and motions that can increase the magnetic field strength. In this work, we
Simulation of magnetohydrodynamic flows: A Constrained transport method
Description d'une nouvelle technique numerique, appelee methode du transport contraint, pour etudier l'evolution de l'equation d'induction en fonction du flux magnetique. Cette methode fonctionne
An Analytical Model for Spherical Galaxies and Bulges
Un modele de masse pour les galaxies elliptiques, qui approche la loi R 1/4 de Vaucouleur, est developpe. Il est demontre que les proprietes intrinseques et les distributions de densite de ce modele
The Distribution of Stars in Globular Clusters
FLASH: An Adaptive Mesh Hydrodynamics Code for Modeling Astrophysical Thermonuclear Flashes
TLDR
The first version of a new-generation simulation code, FLASH, solves the fully compressible, reactive hydrodynamic equations and allows for the use of adaptive mesh refinement and contains state-of-the-art modules for the equations of state and thermonuclear reaction networks.
Evolution of cosmic ray electron spectra in magnetohydrodynamical simulations
Cosmic ray (CR) electrons reveal key insights into the non-thermal physics of the interstellar medium (ISM), galaxies, galaxy clusters, and active galactic nuclei by means of their inverse Compton
Sloshing of Galaxy Cluster Core Plasma in the Presence of Self-interacting Dark Matter
The “sloshing” of the cold gas in the cores of relaxed clusters of galaxies is a widespread phenomenon evidenced by the presence of spiral-shaped “cold fronts” in X-ray observations of these systems.
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