Relics as probes of galaxy cluster mergers
arXiv:1107.4119 · doi:10.1007/s12036-011-9108-2
Abstract
Galaxy clusters grow by mergers with other clusters and galaxy groups. These mergers create shocks within the intracluster medium (ICM). It is proposed that within the shocks particles can be accelerated to extreme energies. In the presence of a magnetic field these particles should then form large regions emitting synchrotron radiation, creating so-called radio relics. An example of a cluster with relics is CIZA J2242.8+5301. Here we present hydrodynamical simulations of idealized binary cluster collisions with the aim of constraining the merger scenario for this cluster. We conclude that by using the location, size and width of double radio relics we can set constraints on the mass ratios, impact parameters, timescales, and viewing geometries of binary cluster merger events.
Accepted for publication in special issue of Journal of Astrophysics and Astronomy: conference proceedings of "Diffuse Relativistic Plasmas" conference, Bangalore, 1-4 March 2011, 4 pages, 2 figures
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Cited by in corpus (6)
- Dark Matter Self-interactions and Small Scale Structure
- Gravitational probes of dark matter physics
- A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass-luminosity relation
- Shock heating of the merging galaxy cluster A521
- Morphology of radio relics I: What causes the substructure of synchrotron emission?
- Morphology of radio relics II: Properties of polarised emission