Astrophysical gyrokinetics: kinetic and fluid turbulent cascades in magnetized weakly collisional plasmas
This paper presents a theoretical framework for understanding plasma turbulence in
astrophysical plasmas. It is motivated by observations of electromagnetic and density …
astrophysical plasmas. It is motivated by observations of electromagnetic and density …
On the spectrum of magnetohydrodynamic turbulence
S Boldyrev - The Astrophysical Journal, 2005 - iopscience.iop.org
We propose a phenomenological model for incompressible magnetohydrodynamic
turbulence. We argue that nonlinear-wave interaction weakens as the energy cascade …
turbulence. We argue that nonlinear-wave interaction weakens as the energy cascade …
Spectrum of kinetic-Alfvén turbulence
S Boldyrev, JC Perez - The Astrophysical Journal Letters, 2012 - iopscience.iop.org
ABSTRACT A numerical study of strong kinetic-Alfvén turbulence at scales smaller than the
ion gyroscale is presented, and a phenomenological model is proposed that argues that …
ion gyroscale is presented, and a phenomenological model is proposed that argues that …
[PDF][PDF] MHD dynamos and turbulence
SM Tobias, F Cattaneo, S Boldyrev - arXiv preprint arXiv:1103.3138, 2011 - arxiv.org
Magnetic fields are ubiquitous in the universe (Parker 1979, Zeldovich et al. 1983). Their
interaction with an electrically conducting fluid gives rise to a complex system–a …
interaction with an electrically conducting fluid gives rise to a complex system–a …
Fast magnetic reconnection and spontaneous stochasticity
Magnetic field lines in astrophysical plasmas are expected to be frozen-in at scales larger
than the ion gyroradius. The rapid reconnection of magnetic-flux structures with dimensions …
than the ion gyroradius. The rapid reconnection of magnetic-flux structures with dimensions …
Evaluation of the turbulent energy cascade rates from the upper inertial range in the solar wind at 1 AU
BJ Vasquez, CW Smith, K Hamilton… - Journal of …, 2007 - Wiley Online Library
We construct a database from ACE spacecraft measurements of solar wind magnetic field
fluctuations at 1 AU which resolves∼ 2 decades in frequency at the high end of the inertial …
fluctuations at 1 AU which resolves∼ 2 decades in frequency at the high end of the inertial …
The anisotropy of electron magnetohydrodynamic turbulence
J Cho, A Lazarian - The Astrophysical Journal, 2004 - iopscience.iop.org
We present numerical studies of three-dimensional electron magnetohydrodynamic (EMHD)
turbulence. We investigate the cascade timescale and anisotropy of freely decaying, strong …
turbulence. We investigate the cascade timescale and anisotropy of freely decaying, strong …
High-resolution hybrid simulations of kinetic plasma turbulence at proton scales
We investigate properties of plasma turbulence from magnetohydrodynamic (MHD) to sub-
ion scales by means of two-dimensional, high-resolution hybrid particle-in-cell simulations …
ion scales by means of two-dimensional, high-resolution hybrid particle-in-cell simulations …
Toward a theory of astrophysical plasma turbulence at subproton scales
S Boldyrev, K Horaites, Q Xia… - The Astrophysical …, 2013 - iopscience.iop.org
We present an analytical study of subproton electromagnetic fluctuations in a collisionless
plasma with a plasma beta of the order of unity. In the linear limit, a rigorous derivation from …
plasma with a plasma beta of the order of unity. In the linear limit, a rigorous derivation from …