Observations of Waves and Structures by Frequency–Wavenumber Spectrum in Solar Wind Turbulence by L.-L. Zhao, G. P. Zank, M. Nakanotani, L. Adhikari

“…However, there is no clear evidence of propagating Alfvén waves that have a nonzero rest-frame frequency. …”
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Weak Solar Radio Bursts from the Solar Wind Acceleration Region Observed by the Parker Solar Probe and Its Probable Emission Mechanism by Ling Chen, Bing Ma, DeJin Wu, Xiaowei Zhou, Marc Pulupa, PeiJin Zhang, Pietro Zucca, Stuart D. Bale, Justin C. Kasper, SuPing Duan

“…We propose that solitary kinetic Alfvén waves with kinetic scales could be responsible for the generation of these small-scale weak SRBs, called solitary wave radiation.…”
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An Optically Thin View of the Solar Chromosphere from Observations of the O i 1355 Å Spectral Line by Mats Carlsson, Bart De Pontieu

“…The dependence with the height of the intensity and line broadening off-limb is compatible with the line broadening being dominated by the superposition of Alfvén waves on different structures. The nonthermal broadening shows a modest but significant enhancement above locations that are in between photospheric magnetic flux concentrations in plage, i.e., where the magnetic field is likely to be more inclined with respect to the line of sight. …”
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Heavy ion acceleration at parallel shocks by V. L. Galinsky, V. I. Shevchenko

“…A study of alpha particle acceleration at parallel shock due to an interaction with Alfvén waves self-consistently excited in both upstream and downstream regions was conducted using a scale-separation model (Galinsky and Shevchenko, 2000, 2007). …”
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CHAMP observation of intense kilometer-scale field-aligned currents, evidence for an ionospheric Alfvén resonator by M. Rother, K. Schlegel, H. Lühr

“…We propose an explanation of the KSFACs in terms of Alfvén waves trapped in a ionospheric resonator, which is initiated when the convection electric field or current strength surpasses a critical value. …”
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A Model for Gradual-phase Heating Driven by MHD Turbulence in Solar Flares by William Ashfield IV, Dana Longcope

“…Here we propose a model for extended flare heating by the slow dissipation of turbulent Alfvén waves initiated during the retraction of newly reconnected flux tubes through a current sheet. …”
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Electromagnetic instabilities and plasma turbulence driven by electron-temperature gradient by Adkins, T, Schekochihin, AA, Ivanov, PG, Roach, CM

“…It exists in both a slab version (sTAI, destabilising kinetic Alfvén waves) and a curvature-mediated version (cTAI), which is a cousin of the (electron-scale) kinetic ballooning mode. …”

Tomography of a Solar Plage with the Tenerife Inversion Code by Hao Li, Tanausú del Pino Alemán, Javier Trujillo Bueno, Ryohko Ishikawa, Ernest Alsina Ballester, David E. McKenzie, Frédéric Auchère, Ken Kobayashi, Takenori J. Okamoto, Laurel A. Rachmeler, Donguk Song

“…Finally, we use the inverted model atmospheres to give a rough estimation of the energy that could be carried by Alfvén waves propagating in the chromosphere in the plage and network regions, showing that it is sufficient to compensate for the estimated energy losses in the chromosphere of solar active regions.…”
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Ion alfvén velocity fluctuations and implications for the diffusion of streaming cosmic rays by James R. Beattie, Mark R. Krumholz, Mark R. Krumholz, Christoph Federrath, Christoph Federrath, Matt L. Sampson, Roland M. Crocker

“…Cosmic rays (CRs) propagate through it, and those with energies from ∼ GeV − TeV are likely subject to the streaming instability, whereby the wave damping processes balances excitation of resonant ionic Alfvén waves by the CRs, reaching an equilibrium in which the propagation speed of the CRs is very close to the local ion Alfvén velocity. …”
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Alfvénic velocity spikes and rotational flows in the near-Sun solar wind by Kasper, J. C., Bale, S. D., Belcher, John Winston, Berthomier, M., Case, A. W., Chandran, B. D. G., Curtis, D. W., Gallagher, D., Gary, S. P., Golub, L., Halekas, J. S., Ho, G. C., Horbury, T. S., Hu, Q., Huang, J., Klein, K. G., Korreck, K. E., Larson, D. E., Livi, R., Maruca, B., Lavraud, B., Louarn, P., Maksimovic, M., Martinovic, M., McGinnis, D., Pogorelov, N. V., Richardson, J. D., Skoug, R. M., Steinberg, J. T., Stevens, M. L., Szabo, A., Velli, M., Whittlesey, P. L., Wright, K. H., Zank, G. P., MacDowall, R. J., McComas, D. J., McNutt, R. L., Pulupa, M., Raouafi, N. E., Schwadron, N. A.

“…Here we report observations of solar-wind plasma at heliocentric distances of about 35 solar radii9–11, well within the distance at which stream interactions become important. We find that Alfvén waves organize into structured velocity spikes with duration of up to minutes, which are associated with propagating S-like bends in the magnetic-field lines. …”
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Advancements in the study of collisionless magnetic reconnection and plasma waves by Yong Ren, Lei Dai, Chi Wang, Meng Zhou, Rongsheng Wang

“…This review focuses on plasma waves during the Earth's magnetosphere magnetic reconnection, seeking to elucidate the characteristics and roles of kinetic Alfven waves (KAW), low hybrid waves, whistler waves, electrostatic solitary waves (ESWs), ion acoustic waves, and electron-scale high-frequency electrostatic waves. …”
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Geometrical methods in dynamics of complex fluids and kinetic theory by Chong, CL

“…Using the energy-Casimir and energy-momentum methods, we find force-free fields and finite amplitude Alfven waves in the active suspension.</p>…”

Nature, Generation, and Dissipation of Alfvénic Kinks/Switchbacks Observed by Parker Solar Probe and WIND by Chuanpeng Hou, Xingyu Zhu, Rui Zhuo, Jiansen He, Daniel Verscharen, Die Duan

“…In contrast, quasi-perpendicular kinks may come from the steepening of Alfvén waves launched from both coronal interchange magnetic reconnection and from the more inhomogeneous lower solar atmosphere. …”
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Spectral Observations and Modeling of a Solar White-light Flare Observed by CHASE by De-Chao Song, Jun Tian, Y. Li, M. D. Ding, Yang Su, Sijie Yu, Jie Hong, Ye Qiu, Shihao Rao, Xiaofeng Liu, Qiao Li, Xingyao Chen, Chuan Li, Cheng Fang

“…The result reveals that the white-light enhancement cannot be well explained by a pure electron-beam heating together with its induced radiative backwarming but may need additional heating sources such as Alfvén waves.…”
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The interactions between ULF waves and cold charged particles in the Earth's magnetosphere by Jie Ren, Qiugang Zong

“…Besides, after excited at the magnetopause, they can propagate earthward across the geomagnetic field lines and generate the standing Alfvén waves (poloidal mode and toroidal mode) via the field line resonance. …”
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Constraints on the Alfvénicity of Switchbacks by O. V. Agapitov, J. F. Drake, M. Swisdak, K.-E. Choi, N. Raouafi

“…These results have consequences for the interpretation of switchbacks as large amplitude Alfvén waves.…”
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Ionospheric O+ ion outflow and its impact on magnetospheric dynamics by Junjie Chen, Binzheng Zhang, Brambles Oliver

“…During geomagnetic activity periods, ionospheric heavy ions such as O+ ions have a transverse ion acceleration due to wave-particle interactions with the Alfvén waves from the magnetosphere. Accompanied by mirror force lifting, these non-thermal O+ ions can outflow to the magnetosphere, which plays an important role in the dynamics of the coupled solar wind-magnetosphere-ionosphere system. …”
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