Current-Driven Kink Instability in Relativistic Jets
نویسندگان
چکیده
منابع مشابه
Current-Driven Kink Instability in Magnetically Dominated Rotating Relativistic Jet
We have investigated the influence of jet rotation and differential motion on the linear and nonlinear development of the current-driven (CD) kink instability of force-free helical magnetic equilibria via threedimensional relativistic magnetohydrodynamic simulations. In this study, we follow the temporal development within a periodic computational box. Displacement of the initial helical magnet...
متن کاملPoynting Flux Dominated Jets in Decreasing Density Atmospheres. I. The Non-relativistic Current-driven Kink Instability and the Formation of “Wiggled” Structures
Non-relativistic three-dimensional magnetohydrodynamical (MHD) simulations of Poynting flux dominated (PFD) jets are presented. Our study focuses on the propagation of strongly magnetized hypersonic, but sub-Alfvénic (C2 s ≪ V 2 jet < V 2 A) flow and on the subsequent development of a current-driven (CD) kink instability. This instability may be responsible for the “wiggled” structures seen in ...
متن کاملA current driven instability in parallel, relativistic shocks
Abstract. Recently, Bell [2] has reanalysed the problem of wave excitation by cosmic rays propagating in the pre-cursor region of a supernova remnant shock front. He pointed out a strong, non-resonant, current-driven instability that had been overlooked in the kinetic treatments by Achterberg [1] and McKenzie & Völk [10], and suggested that it is responsible for substantial amplification of the...
متن کاملThe role of kink instability in Poynting-flux dominated jets
The role of kink instability in magnetically driven jets is explored through numerical one-dimensional steady relativistic MHD calculations. The instability is shown to have enough time to grow and influence the dynamics of Poynting-flux dominated jets. In the case of AGN jets, the flow becomes kinetic flux dominated at distances > ∼ 1000rg because of the rapid dissipation of Poynting flux. Whe...
متن کاملRelativistic Acceleration of Magnetically Driven Jets
We present an analytical model for describing highly relativistic acceleration of magnetically driven jets, within the framework of ideal MHD for cold, stationary and axisymmetric outflows. Our novel procedure is to treat the wind equation as an algebraic relation between the relativistic Alfvén Mach-number and the poloidal electric to toroidal magnetic field amplitudes ratio ξ. This allows us ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2010
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s174392131100754x