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Kinetic simulations of magnetized turbulence in astrophysical plasmas.
Published 2008Journal article -
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Nonlinear growth of firehose and mirror fluctuations in astrophysical plasmas.
Published 2008“…The presence of small-scale magnetic fluctuations may dramatically affect the transport properties and, thereby, the large-scale dynamics of the high-beta astrophysical plasmas.…”
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Comment on "Kinetic Simulations of Magnetized Turbulence in Astrophysical Plasmas'' - Reply
Published 2008Journal article -
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Developed turbulence and nonlinear amplification of magnetic fields in laboratory and astrophysical plasmas.
Published 2015Journal article -
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A hybrid gyrokinetic ion and isothermal electron fluid code for astrophysical plasma
Published 2018“…This paper describes a new code for simulating astrophysical plasmas that solves a hybrid model composed of gyrokinetic ions (GKI) and an isothermal electron fluid (ITEF) [A. …”
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Howes et al. Reply
Published 2008“…Reply to Comment on "Kinetic Simulations of Magnetized Turbulence in Astrophysical Plasmas" arXiv:0711.4355…”
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Astrophysical Gyrokinetics: Basic Equations and Linear Theory
Published 2005“…Magnetohydrodynamic (MHD) turbulence is encountered in a wide variety of astrophysical plasmas, including accretion disks, the solar wind, and the interstellar and intracluster medium. …”
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Astrophysical gyrokinetics: Basic equations and linear theory
Published 2006“…Magnetohydrodynamic (MHD) turbulence is encountered in a wide variety of astrophysical plasmas, including accretion disks, the solar wind, and the interstellar and intracluster medium. …”
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10
Amplitude limits and nonlinear damping of shear-Alfvén waves in high-beta low-collisionality plasmas
Published 2017“…The effect has interesting implications for the physics of magnetized turbulence in the high-β conditions that are prevalent in many astrophysical plasmas.…”
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A stringent limit on the amplitude of alfvénic perturbations in high-beta low-collisionality plasmas
Published 2016“…Such a restrictive bound on shear-Alfvén-wave amplitudes has far-reaching implications for the physics of magnetized turbulence in the high-β conditions prevalent in many astrophysical plasmas, as well as for the solar wind at ∼1 au where β ≳ 1.…”
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Asymptotic solutions for a relativistic formulation of the generalized nonextensive Thomas-Fermi model
Published 2016“…While this generalized model has potential application to neutron stars and in understanding the screening process in relativistic dense astrophysical plasmas, there has not been a study on the behavior of the Thomas-Fermi potential φ(x) due to nonextensive statistical mechanics and relativistic effects. …”
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13
Thomson scattering from near-solid density plasmas using soft X-ray free electron lasers
Published 2007“…The plasma region of interest marks the transition from an ideal plasma to a correlated and degenerate many-particle system and is of current interest, e.g., in ICF experiments or laboratory astrophysics. Plasma diagnosis of such plasmas is a longstanding issue which is addressed here using a pump-probe scattering experiment to reveal the collective electron plasma mode (plasmon) using the high-brilliance radiation to probe the plasma. …”
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14
Nonlinear mirror instability
Published 2014“…Slow dynamical changes in magnetic-field strength and invariance of the particles' magnetic moments generate ubiquitous pressure anisotropies in weakly collisional, magnetized astrophysical plasmas. This renders them unstable to fast, small-scale mirror and firehose instabilities, which are capable of exerting feedback on the macroscale dynamics of the system. …”
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Visualizing electromagnetic fields in laser-produced counter-streaming plasma experiments for collisionless shock laboratory astrophysics
Published 2013“…Collisionless shocks are often observed in fast-moving astrophysical plasmas, formed by non-classical viscosity that is believed to originate from collective electromagnetic fields driven by kinetic plasma instabilities. …”
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Multi-species measurements of the firehose and mirror instability thresholds in the solar wind
Published 2016“…<p>Thefirehose and mirror instabilities are thought to arise in a variety of space and astrophysical plasmas, constraining the pressure anisotropies and drifts between particle species. …”
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A model of nonlinear evolution and saturation of the turbulent MHD dynamo
Published 2002“…This regime is very common in low-density hot astrophysical plasmas. During the early (kinematic) stage, weak magnetic fluctuations grow exponentially and concentrate at the resistive scale, which lies far below the hydrodynamic viscous scale. …”
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Turbulent heating in an inhomogeneous magnetized plasma slab
Published 2018“…Observational evidence in space and astrophysical plasmas with a long collisional mean free path suggests that more massive charged particles may be preferentially heated. …”
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Convective and Rotational Stability of a Dilute Plasma
Published 2001“…Previous studies have generally been based upon the classical H{\o}iland criteria, which are inappropriate for magnetized, dilute astrophysical plasmas. In sharp contrast to recent claims in the literature, the new stability criteria demonstrate that marginal flow stability is not a fundamental property of accreting plasmas thought to be associated with low luminosity X-ray sources.…”
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A model of nonlinear evolution and saturation of the turbulent MHD dynamo
Published 2002“…This regime is very common in low-density hot astrophysical plasmas. During the early (kinematic) stage, weak magnetic fluctuations grow exponentially and concentrate at the resistive scale, which lies far below the hydrodynamic viscous scale. …”
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