Plasma Waves and Jets from Moving Conductors
arXiv:1603.09693 · doi:10.1103/PhysRevD.93.123016
Abstract
We consider force-free plasma waves launched by the motion of conducting material through a magnetic field. We develop a spacetime-covariant formalism for perturbations of a uniform magnetic field and show how the transverse motion of a conducting fluid acts as a source. We show that fast-mode waves are sourced by the compressibility of the fluid, with incompressible fluids launching a pure-Alfvén outflow. Remarkably, this outflow can be written down in closed form for an arbitrary time-dependent, nonaxisymmetric incompressible flow. The instantaneous flow velocity is imprinted on the magnetic field and transmitted away at the speed of light, carrying detailed information about the conducting source at the time of emission. These results can be applied to transients in pulsar outflows and to jets from neutron stars orbiting in the magnetosphere of another compact object. We discuss jets from moving conductors in some detail.
arXiv comment10 pages. v2 improvements
References in corpus (24)
- Dual Jets from Binary Black Holes
- Spacetime approach to force-free magnetospheres
- Magnetospheres of Black Hole Systems in Force-Free Plasma
- Accurate Simulations of Binary Black-Hole Mergers in Force-Free Electrodynamics
- Exact Solutions to Force-Free Electrodynamics in Black Hole Backgrounds
- Nonsingular electrodynamics of a rotating black hole boosted in an asymptotically uniform magnetic test field
- Electromagnetic power of merging and collapsing compact objects
- Boosting jet power in black hole spacetimes
- A QED Model for the Origin of Bursts from SGRs and AXPs
- A QED Model for Non-thermal Emission from SGRs and AXPs
- Schwarzschild black holes as unipolar inductors: expected electromagnetic power of a merger
- Nonlinear QED Effects in Strong-Field Magnetohydrodynamics
- A Class of Exact Solution to the Blandford-Znajek Process
- Electromagnetic Jets from Stars and Black Holes
- Energy extraction from boosted black holes: Penrose process, jets, and the membrane at infinity
- Stability of Force-Free Magnetospheres
- Magnetosphere of a Kerr black hole immersed in magnetized plasma and its perturbative mode structure
- Electromagnetic Shocks in Strong Magnetic Fields
- On the Magnetosphere of an Accelerated Pulsar
- QED One-loop Corrections to a Macroscopic Magnetic Dipole
- Stability of exact force-free electrodynamic solutions and scattering from spacetime curvature
- QED can explain the non-thermal emission from SGRs and AXPs : Variability
- Nonaxisymmetric Poynting Jets
- Plasma-wave generation in a dynamic spacetime