Parametric Instability: An Evolutive Mechanism for the Alfvénic Turbulence in the Solar Wind by Francesco Malara, Leonardo Primavera, Pierluigi Veltri

“…Parametric decay, where the energy of an initial Alfvén wave is progressively transferred to both backward-propagating Alfvén and compressive modes, has been proposed as a mechanism responsible for such a behavior. …”
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The dynamic age of Centaurus A by Jean A Eilek

“…Thus, ongoing ISR must be occuring within the radio source. Alfven-wave ISR is probably occuring throughout the source, and may be responsible for maintaining the γ -ray-loud electrons. …”
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Firehose and Mirror Instabilities in a Collisionless Shearing Plasma by Kunz, M, Schekochihin, A, Stone, J

“…Both instabilities drive sub-ion-Larmor-scale fluctuations, which appear to be kinetic-Alfvén-wave turbulence. Our results impact theories of momentum and heat transport in astrophysical and space plasmas, in which the stretching of a magnetic field by shear is a generic process. © 2014 American Physical Society.…”

The effect of delays on filament oscillations and stability by van den Oord, G, Schutgens, N, Kuperus, M

“…We also discuss the effect of Alfvén wave emission on filament oscillations and show that wave emission is important for stabilizing filaments. …”

Detecting groups of equidistant frequencies in spectra of geomagnetic pulsations by Polyakov A.R.

“…The analysis of peaks of all histograms allows us to conclude that the equidistant frequency groups, which correspond to peaks in each histogram, are eigenfrequencies of the 2D Alfvén wave resonator. The existence of such a resonator in the magnetosphere in the vicinity of the outer edge of the plasmopause has been predicted in theoretical studies [Guglielmi, Polyakov, 1983; Leonovich, Mazur, 1987]. …”
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Possible coexistence of kinetic Alfvén and ion Bernstein modes in sub-ion scale compressive turbulence in the solar wind by Owen Wyn Roberts, Daniel Verscharen, Yasuhito Narita, Rumi Nakamura, Zoltán Vörös, Ferdinand Plaschke

“…The plasma frame frequencies show two populations, one below the proton cyclotron frequency ω<Ω_{ci} consistent with kinetic Alfvén wave (KAW) turbulence. The second component has higher frequencies ω>Ω_{ci} consistent with ion Bernstein wave turbulence. …”
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Turbulence in Magnetized Pair Plasmas by Gomes Loureiro, Nuno F, Boldyrev, Stanislav

“…At scales below the electron (and positron) skin depth, it is argued that turbulence is dictated by a cascade of the inertial Alfvén wave, which we show to result in the magnetic energy spectrum [subscript]∞k-¹¹/³. ©2018 Keywords: magnetic fields; magnetic reconnection; plasmas; turbulence…”
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Astrophysical gyrokinetics: kinetic and fluid turbulent cascades in magnetized weakly collisional plasmas by Schekochihin, A, Cowley, S, Dorland, W, Hammett, G, Howes, G, Quataert, E, Tatsuno, T

“…In the "dissipation range" between the ion and electron gyroscales, there are again two cascades: the kinetic-Alfven-wave (KAW) cascade governed by two fluid-like Electron RMHD equations and a passive phase-space cascade of ion entropy fluctuations. …”

Gyrokinetic turbulence: between idealized estimates and a detailed analysis of nonlinear energy transfers by Bogdan Teaca, Frank Jenko, Daniel Told

“…The plasma parameters employed here are relevant to kinetic Alfvén wave turbulence in solar wind conditions. In addition, we use an idealized test representation for the energy transfers between two scales, to aid our understanding of the diagnostics applicable to the nonlinear cascade in an infinite inertial range. …”
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The outer atmospheres of 'hybrid' giants by Harper, G, Graham M. Harper

“…</p> <p>In Chapter 7, non-isothermal Alfvén wave driven wind models are calculated. It is shown that ι Aur proves to be a severe test of these models and that the transition region and the cool wind are physically separate.…”

A determination of the hydromagnetic waves polarization from their perturbations on the terminator by L. Alperovich, B. Fidel, O. Saka

“…The latter is evidence for the dominant contribution of the Alfvén waves to low-latitude and equatorial oscillations.…”
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Solar Wind Driven from GONG Magnetograms in the Last Solar Cycle by Zhenguang Huang, Gábor Tóth, Nishtha Sachdeva, Bart van der Holst

“…In a previous study, Huang et al. used the Alfvén Wave Solar atmosphere Model, one of the widely used solar wind models in the community, driven by ADAPT-GONG magnetograms to simulate the solar wind in the last solar cycle and found that the optimal Poynting flux parameter can be estimated from either the open field area or the average unsigned radial component of the magnetic field in the open field regions. …”
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Density Enhancement Streams in The Solar Wind by F. S. Mozer, O. Agapitov, S. D. Bale, R. Livi, O. Romeo, K. Sauer, I. Y. Vasko, J. Verniero

“…The existence of this pair of waves is consistent with the observed plasma distributions and is explained as an oscilliton due to the nonlinear coupling between the kinetic Alfvén wave and the ion cyclotron mode, which belongs with the minor population of alpha particles.…”
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Adjusting the Potential Field Source Surface Height Based on Magnetohydrodynamic Simulations by Zhenguang Huang, Gábor Tóth, Jia Huang, Nishtha Sachdeva, Bart van der Holst, Ward B. Manchester

“…In this study, we propose a novel approach to specify the source surface height by comparing the areas of the open magnetic field regions from the potential field solution with predictions made by a magnetohydrodynamic model, in our case the Alfvén Wave Solar atmosphere Model. We find that the adjusted source surface height is significantly less than 2.5 R _s near solar minimum and slightly larger than 2.5 R _s near solar maximum. …”
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A Comprehensive Simulation of Solar Wind Formation from the Solar Interior: Significant Cross-field Energy Transport by Interchange Reconnection near the Sun by Haruhisa Iijima, Takuma Matsumoto, Hideyuki Hotta, Shinsuke Imada

“…To evaluate the energetic contributions from Alfvén wave and interchange reconnection, we develop a new method to quantify the cross-field energy transport in the simulated atmosphere. …”
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Estimating Ion Temperatures at the Polar Coronal Hole Boundary by Yingjie Zhu, Judit Szente, Enrico Landi

“…We found that the T _i of ions with Z / A less than 0.20 or greater than 0.33 are much higher than the local electron temperature. We ran the Alfvén Wave Solar Model-realtime to investigate the formation of optically thin emissions along the line of sight (LOS). …”
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A GPU-Accelerated Modern Fortran Version of the ECHO Code for Relativistic Magnetohydrodynamics by Luca Del Zanna, Simone Landi, Lorenzo Serafini, Matteo Bugli, Emanuele Papini

“…The chosen benchmark is the 3D propagation of a relativistic MHD Alfvén wave, for which strong and weak scaling tests performed on the LEONARDO pre-exascale supercomputer at CINECA are provided (using up to 256 nodes corresponding to 1024 GPUs, and over 14 billion cells). …”
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The physics mechanisms of the weakly coherent mode in the Alcator C-Mod Tokamak by Liu, Z. X., Xu, X. Q., Gao, X., Xia, T. Y., Zhang, T., Li, J. G., Hubbard, Amanda E, Hughes Jr, Jerry, Walk Jr, John R, Theiler, Christian, Baek, Seung Gyou, Golfinopoulos, Theodore, Whyte, Dennis G

“…The calculations indicate that a tokamak pedestal exhibiting a WCM is linearly unstable to drift Alfven wave (DAW) instabilities and the resistive ballooning mode. …”
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Electron Temperature Anisotropy Effects on Alpha/Proton Instability in the Solar Wind by Si-Yi Lang, Liang Xiang, Qiu-Huan Li, Wen-Lu Zhang, Hong-Wei Yu

“…With an excess parallel temperature <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mrow><mi>e</mi><mo>⊥</mo></mrow></msub><mo>/</mo><msub><mi>T</mi><mrow><mi>e</mi><mo>‖</mo></mrow></msub><mo><</mo><mn>1</mn></mrow></semantics></math></inline-formula>, the parallel magnetosonic/whistler (PM/W), parallel Alfvén wave (PAW), and oblique Alfvén/ion cyclotron (OA/IC) instabilities could be generated, while for an excess perpendicular temperature <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mrow><mi>e</mi><mo>⊥</mo></mrow></msub><mo>/</mo><msub><mi>T</mi><mrow><mi>e</mi><mo>‖</mo></mrow></msub><mo>></mo><mn>1</mn></mrow></semantics></math></inline-formula>, the PM/W, OA/IC, parallel whistler (PW), and kinetic Alfvén wave (KAW) instabilities could grow. …”
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Investigation of the outer and inner low-latitude boundary layers by T. M. Bauer, R. A. Treumann, R. A. Treumann, W. Baumjohann, W. Baumjohann

“…Using the average spectra of electric and magnetic fluctuations in the boundary layer, we estimate the diffusion caused by lower hybrid drift instability, gyroresonant pitch angle scattering, or kinetic Alfvén wave turbulence. We find that cross-field diffusion cannot transport solar wind plasma into the OBL or IBL at a rate that would account for the thickness ( ~ 1000 km) of these sublayers. …”
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