MHD turbulence: a biased review by Schekochihin, AA

“…On the margins of this core narrative, standard weak-MHD-turbulence theory is argued to require some adjustment – and a new scheme for such an adjustment is proposed – to take account of the determining part that a spontaneously emergent 2D condensate plays in mediating the Alfvén-wave cascade from a weakly interacting state to a strongly turbulent (critically balanced) one. …”

Simulating Compressive Stream Interaction Regions during Parker Solar Probe’s First Perihelion Using Stream-aligned Magnetohydrodynamics by E. M. Wraback, A. P. Hoffmann, W. B. Manchester IV, I. V. Sokolov, B. van der Holst, D. Carpenter

“…This work demonstrates the success of the Alfvén wave turbulence theory for predicting interplanetary magnetic turbulence levels, while self-consistently reproducing solar wind speeds, densities, and overall temperatures, including at small heliocentric distances and through SIR compression regions.…”
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Statistics of a parallel Poynting vector in the auroral zone as a function of altitude using Polar EFI and MFE data and Astrid-2 EMMA data by P. Janhunen, A. Olsson, N. A. Tsyganenko, C. T. Russell, H. Laakso, L. G. Blomberg

“…We find that the AC Poynting vector (Alfvén-wave related Poynting vector) is statistically not sufficient to power auroral electron precipitation, although it may, for <i>K_p</i>&gt;2, power 25–50% of it. …”
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The Link between Nonthermal Velocity and Free Magnetic Energy in Solar Flares by James McKevitt, Robert Jarolim, Sarah Matthews, Deborah Baker, Manuela Temmer, Astrid Veronig, Hamish Reid, Lucie Green

“…Analysis of these results supports suggestions that unresolved Doppler flows do not solely cause nonthermal broadening, and instead other mechanisms like Alfvén wave propagation and isotropic turbulence have a greater influence.…”
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Instabilities Driven by Proton Temperature Anisotropy in the Presence of Alpha Particles: Implications for Proton-temperature-anisotropy Constraint in the Solar Wind by L. Xiang, D. J. Wu, L. Chen, Q. H. Li, G. Q. Zhao, H. Q. Feng, H. W. Yu

“…As the alpha-beam drift velocity v _α / v _A increases, the growth rates of forward Alfvén/ion-cyclotron (FA/IC) and backward magnetosonic/whistler (BM/W) instabilities increase, those of backward Alfvén/ion-cyclotron (BA/IC) and forward magnetosonic/whistler (FM/W) instabilities decrease, and those of the mirror and forward Alfvén wave (FAW) instabilities are nearly constant. …”
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Nonthermal Motions and Atmospheric Heating of Cool Stars by S. Boro Saikia, T. Lueftinger, V. S. Airapetian, T. Ayres, M. Bartel, M. Guedel, M. Jin, K. G. Kislyakova, P. Testa

“…Assuming the nonthermal broadening is caused by the presence of Alfvén waves, we also determined the associated wave energy densities. …”
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A STEADY-STATE PICTURE OF SOLAR WIND ACCELERATION AND CHARGE STATE COMPOSITION DERIVED FROM A GLOBAL WAVE-DRIVEN MHD MODEL by Landi, E., Holst, B. van der, Lepri, Susan T., Nuevo, F. A., Frazin, R., Manchester, W., Sokolov, I., Gombosi, T. I., Oran, Rona, Vasquez, A. M.

“…We model the steady-state solar atmosphere using the Alfvén Wave Solar Model (AWSoM), a global MHD model driven by Alfvén waves, and apply an ionization code to calculate the charge state evolution along modeled open field lines. …”
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On the Escape of Low-frequency Waves from Magnetospheres of Neutron Stars by Ephim Golbraikh, Yuri Lyubarsky

“…We study the nonlinear decay of the fast magnetosonic (fms) into the Alfvén waves in relativistic force-free magnetohydrodynamics. …”
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Stochastic particle acceleration in the lobes of giant radio galaxies by O'Sullivan, S, Reville, B, Taylor, A

“…We investigate the acceleration of particles by Alfvén waves via the second-order Fermi process in the lobes of giant radio galaxies. …”

Interplanetary and interstellar plasma turbulence by Schekochihin, A, Cowley, S, Dorland, W

“…Above the ion gyroscale, it is shown rigourously that the Alfvén waves decouple from the electron-density and magnetic-field-strength fluctuations and satisfy the reduced MHD equations. …”

Interplanetary and interstellar plasma turbulence by Schekochihin, A, Cowley, S, Dorland, W

“…Above the ion gyroscale, it is shown rigourously that the Alfven waves decouple from the electron-density and magnetic-field-strength fluctuations and satisfy the Reduced MHD equations. …”

Effects of Damping Lengths on the Wind Velocity for 32 CYG by Kyung-Mee Kim, Kyu-Hong Choi

“…The results showed the forces by forces by Alfven waves gave the major contribution to the wind velocity but the forces by the pressure and gravitation did little. …”
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Interpreting Power Anisotropy Measurements in Plasma Turbulence by Chen, C, Wicks, RT, Horbury, T, Schekochihin, A

“…Model magnetic field power spectra are presented assuming a cascade of critically balanced Alfven waves in the inertial range and kinetic Alfven waves in the dissipation range. …”

Interpreting power anisotropy measurements in plasma turbulence by Chen, C, Wicks, RT, Horbury, T, Schekochihin, A

“…Model magnetic field power spectra are presented assuming a cascade of critically balanced Alfvén waves in the inertial range and kinetic Alfvén waves in the dissipation range. …”

Kinetic simulations of magnetized turbulence in astrophysical plasmas. by Howes, G, Dorland, W, Cowley, S, Hammett, G, Quataert, E, Schekochihin, A, Tatsuno, T

“…Magnetic- and electric-field energy spectra show a break at the ion gyroscale; the spectral slopes are consistent with scaling predictions for critically balanced turbulence of Alfvén waves above the ion gyroscale (spectral index -5/3) and of kinetic Alfvén waves below the ion gyroscale (spectral indices of -7/3 for magnetic and -1/3 for electric fluctuations). …”

Astrophysical gyrokinetics: turbulence in pressure-anisotropic plasmas at ion scales and beyond by Kunz, MW, Abel, IG, Klein, KG, Schekochihin, AA

“…The effects of pressure anisotropy on the stability and collisionless damping of Alfvénic and compressive fluctuations are highlighted, with attention paid to the spectral location and width of the frequency jump that occurs as Alfvén waves transition into kinetic Alfvén waves. Secondly, we derive and discuss a very general gyrokinetic free-energy conservation law, which captures both the KRMHD free-energy conservation at long wavelengths and dual cascades of kinetic Alfvén waves and ion entropy at sub-ion-Larmor scales. …”

Fully Kinetic Simulation of 3D Kinetic Alfvén Turbulence by Grošelj, Daniel, Mallet, Alfred, Jenko, Frank, Gomes Loureiro, Nuno F

“…Our results compare favorably against a number of in situ solar wind observations and demonstrate—from first principles—the feasibility of plasma turbulence models based on a critically balanced cascade of kinetic Alfvén waves.…”
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Stochastic acceleration of cosmic rays in region of relativistic jet deceleration in blazars by M. V. Sydorenko, B. I. Hnatyk, V. V. Marchenko

“…Especially, we consider interaction of fast particles with Alfven waves in the frame of the second order Fermi mechanism of cosmic ray acceleration.…”
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STABILITY OF ALFVEN WINGS IN HMHD by P. A. Sallago

“…A conducting source moving uniformly through a magnetized plasma generates, among a variety of perturbations,Alfvén waves. Alfvén waves can build up structures in the plasma called Alfvén wings. …”
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First observation of fluid-like eddy-dominant bursty bulk flow turbulence in the Earth’s tail plasma sheet by L. Q. Zhang, Chi. Wang, W. Baumjohann, R. S. Wang, J. Y. Wang, James L. Burch, Yu. V. Khotyaintsev

“…In conductive fluids, the Alfvénic/kinetic Alfvénic wave (AW/KAW) is the new “cell” of magnetohydrodynamic (MHD) turbulence (frozen-in condition). …”
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