# Direct kinetic Alfvén wave energy cascade in the presence of imbalance

@article{Passot2022DirectKA, title={Direct kinetic Alfv{\'e}n wave energy cascade in the presence of imbalance}, author={Thierry Passot and P. L. Sulem and D. Laveder}, journal={Journal of Plasma Physics}, year={2022}, volume={88} }

A two-field Hamiltonian gyrofluid model for kinetic Alfvén waves retaining ion finite Larmor radius corrections and parallel magnetic field fluctuations is used to study direct turbulent cascades from the magnetohydrodynamic to the sub-ion scales. For moderate energy imbalance and weak enough magnetic fluctuations, the spectrum of the transverse magnetic field and that of the most energetic wave display a steep transition zone near the ion scale, while the parallel transfer (and thus the…

## References

SHOWING 1-10 OF 37 REFERENCES

Imbalanced kinetic Alfvén wave turbulence: from weak turbulence theory to nonlinear diffusion models for the strong regime

- PhysicsJournal of Plasma Physics
- 2019

A two-field Hamiltonian gyrofluid model for kinetic Alfvén waves retaining ion finite Larmor radius corrections, parallel magnetic field fluctuations and electron inertia, is used to study turbulent…

On the violation of the zeroth law of turbulence in space plasmas

- PhysicsJournal of Plasma Physics
- 2021

The zeroth law of turbulence states that, for fixed energy input into large-scale motions, the statistical steady state of a turbulent system is independent of microphysical dissipation properties.…

The In Situ Signature of Cyclotron Resonant Heating

- Physics
- 2021

Trevor A. Bowen, ∗ Jonathan Squire, Stuart D. Bale, 3 Ben Chandran, Die Duan, Kristopher G. Klein, Davin Larson, Alfred Mallet, Michael D. McManus, 3 Romain Meyrand, J.L. Verniero, and Lloyd D.…

The helicity barrier: how low-frequency turbulence triggers high-frequency heating of the solar wind

- Physics
- 2021

The fast solar wind’s high speeds and nonthermal features require that significant heating occurs well above the Sun’s surface. Two leading theories have seemed incompatible: low-frequency Alfvénic…

The Ion Transition Range of Solar Wind Turbulence in the Inner Heliosphere: Parker Solar Probe Observations

- PhysicsThe Astrophysical Journal Letters
- 2021

The scaling of the turbulent spectra provides a key measurement that allows us to discriminate between different theoretical predictions of turbulence. In the solar wind, this has driven a large…

Intermittency effects in a numerical simulation of stationary three-dimensional turbulence

- PhysicsJournal of Fluid Mechanics
- 1978

A Navier-Stokes direct spectral simulation code was modified to produce stationary and nearly isotropic turbulence in three dimensions. An approximate $-\frac{5}{3}$ energy spectrum was maintained…

High-frequency heating of the solar wind triggered by low-frequency turbulence

- Physics, EducationNature Astronomy
- 2022

Physics Department, University of Otago, Dunedin 9010, New Zealand, Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA 3 Princeton Plasma Physics…

Model of imbalanced kinetic Alfvén turbulence with energy exchange between dominant and subdominant components

- Physics
- 2020

Alfvénic turbulence in the fast solar wind is imbalanced: the energy of the (dominant) waves propagating outward from the Sun is much larger than energy of inward-propagating (subdominant) waves.…

Inverse cascade and magnetic vortices in kinetic Alfvén-wave turbulence

- PhysicsJournal of Plasma Physics
- 2021

A Hamiltonian two-field gyrofluid model for kinetic Alfvén waves (KAWs) in a magnetized electron–proton plasma, retaining ion finite-Larmor-radius corrections and parallel magnetic field…

Modeling Imbalanced Collisionless Alfvén Wave Turbulence with Nonlinear Diffusion Equations

- PhysicsThe Astrophysical Journal
- 2019

A pair of nonlinear diffusion equations in Fourier space is used to study the dynamics of strong Alfvén wave turbulence, from MHD to electron scales. Special attention is paid to the regime of…