Dynamical Friction in a magnetized gas
arXiv:1205.0795 · doi:10.1111/j.1365-2966.2012.21237.x
Abstract
When a gravitating point mass moves subsonically through a magnetized and isothermal medium, the dynamical structure of the flow is studied far from the mass using a perturbation analysis. Analytical solutions for the first-order density and the velocity perturbations are presented. Validity of our solutions is restricted to the cases where the Alfven velocity in the ambient medium is less than the accretor's velocity. The density field is less dense because of the magnetic effects according to the solutions and the dynamical friction force becomes lower as the strength of the magnetic field increases.
Accepted for publication in MNRAS
References in corpus (10)
- On the Interaction between a Protoplanetary Disk and a Planet in an Eccentric Orbit: Application of Dynamical Friction
- Relativistic dynamical friction in a collisional fluid
- Gravitational recoils of supermassive black holes in hydrodynamical simulations of gas rich galaxies
- Dynamical Friction of Double Perturbers in a Gaseous Medium
- Dynamical Friction in a Gas: The Subsonic Case
- Nonlinear Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
- Three-Dimensional Simulations of Spherical Accretion Flows with Small-Scale Magnetic Fields
- Spherically Symmetric Accretion Flows: Minimal Model with MHD Turbulence
- Gaseous drag on a gravitational perturber in Modified Newtonian Dynamics and the structure of the wake
- Dynamical friction in an isentropic gas