# Turning AGN Bubbles into Radio Relics with Sloshing: Modeling CR Transport with Realistic Physics

@article{ZuHone2021TurningAB,
title={Turning AGN Bubbles into Radio Relics with Sloshing: Modeling CR Transport with Realistic Physics},
author={John A. ZuHone and K Ehlert and Rainer Weinberger and Christoph Pfrommer},
journal={Galaxies},
year={2021}
}
Radio relics are arc-like synchrotron sources at the periphery of galaxy clusters, produced by cosmic-ray electrons in a μG magnetic field, which are believed to have been (re-)accelerated by merger shock fronts. However, not all relics appear at the same location as shocks as seen in the X-ray. In a previous work, we suggested that the shape of some relics may result from the pre-existing spatial distribution of cosmic-ray electrons, and tested this hypothesis using simulations by launching…

## References

SHOWING 1-10 OF 44 REFERENCES
Simulations of the dynamics of magnetized jets and cosmic rays in galaxy clusters
• Physics
Monthly Notices of the Royal Astronomical Society
• 2018
Feedback processes by active galactic nuclei in the centres of galaxy clusters appear to prevent large-scale cooling flows and impede star formation. However, the detailed heating mechanism remains
Giant radio relics in galaxy clusters: reacceleration of fossil relativistic electrons?
• Physics
• 2013
Many bright radio relics in the outskirts of galaxy clusters have low inferred Mach numbers, defying expectations from shock acceleration theory and heliospheric observations that the injection
TESTING SECONDARY MODELS FOR THE ORIGIN OF RADIO MINI-HALOS IN GALAXY CLUSTERS
• Physics
• 2015
We present an MHD simulation of the emergence of a radio minihalo in a galaxy cluster core in a ?secondary? model, where the source of the synchrotron-emitting electrons is hadronic interactions
Particle Acceleration on Megaparsec Scales in a Merging Galaxy Cluster
• Physics, Medicine
Science
• 2010
The detection of a megaparsec-scale radio relic showing all the properties of diffusive shock acceleration expected at radio wavelengths suggests that this acceleration mechanism operates on scales larger than those of supernova remnants and implies that merging clusters of galaxies can accelerate particles to energies much higher than those achieved in supernova remnant.
Re-acceleration Model for Radio Relics with Spectral Curvature
• Physics
• 2016
Most of the observed features of radio {\it gischt} relics such as spectral steepening across the relic width and power-law-like integrated spectrum can be adequately explained by diffusive shock
Cosmic ray-driven galactic winds: streaming or diffusion?
• Physics
• 2017
Cosmic rays (CRs) have recently re-emerged as attractive candidates for mediating feedback in galaxies because of their long cooling timescales. They can have energy densities comparable to the
Cosmic ray streaming in clusters of galaxies
• Physics
• 2013
The observed bimodality in radio luminosity in galaxy clusters is puzzling. We investigate the possibility that cosmic-ray (CR) streaming in the intra-cluster medium can 'switch off' hadronically
Simulating the interaction of jets with the intracluster medium
• Physics
• 2017
Jets from supermassive black holes in the centres of galaxy clusters are a potential candidate for moderating gas cooling and subsequent star formation through depositing energy in the intra-cluster
Simulating cosmic ray physics on a moving mesh
We discuss new methods to integrate the cosmic ray (CR) evolution equations coupled to magneto-hydrodynamics (MHD) on an unstructured moving mesh, as realised in the massively parallel AREPO code for
Bow Shock and Radio Halo in the Merging Cluster A520
Chandra observations of the merging galaxy cluster A520 reveal a prominent bow shock with M = 2.1. This is only the second clear example of a substantially supersonic merger shock front in clusters.