Turbulence and Dynamo Interlinks
arXiv:1301.0372 · doi:10.1017/S174392131300272X
Abstract
The role of turbulence in astrophysical environments and its interplay with magnetic fields is still highly debated. In this lecture, we will discuss this issue in the framework of dynamo processes. We will first present a very brief summary of turbulent dynamo theories, then will focus on small scale turbulent dynamos and their particular relevance on the origin and maintenance of magnetic fields in the intra-cluster media (ICM) of galaxies. In these environments, the very low density of the flow requires a collisionless-MHD treatment. We will show the implications of this approach in the turbulent amplification of the magnetic fields in these environments. To finalize, we will also briefly address the connection between MHD turbulence and fast magnetic reconnection and its possible implications in the diffusion of magnetic flux in the dynamo process.
12 pages, 4 figures, IAU Symposium 294: Solar and Astrophysical Dynamos and Magnetic Activity
References in corpus (11)
- Numerical Tests of Fast Reconnection in Weakly Stochastic Magnetic Fields
- Simulations of nonhelical hydromagnetic turbulence
- Incorporating Kinetic Physics into a Two-Fluid Solar-Wind Model with Temperature Anisotropy and Low-Frequency Alfven-Wave Turbulence
- Current status of turbulent dynamo theory: From large-scale to small-scale dynamos
- Is nonhelical hydromagnetic turbulence peaked at small scales?
- The role of turbulent magnetic reconnection on the formation of rotationally supported protostellar disks
- Universal Nonlinear Small-Scale Dynamo
- Reconnection Studies Under Different Types of Turbulence Driving
- Relation of Astrophysical Turbulence and Magnetic Reconnection
- Theoretical approaches to particle propagation and acceleration in turbulent intergalactic medium
- Magnetic Flux Transport by turbulent reconnection in astrophysical flows