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Related papers: Alfv\'en wave phase-mixing in flows: Why over-dens…

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Aims. We investigate the formation of small scales and the dissipation of MHD wave energy through non-linear interactions of counter-propagating, phase-mixed Alfvenic waves in a complex magnetic field. Methods. We conducted fully 3-D,…

Solar and Stellar Astrophysics · Physics 2020-04-15 Thomas Howson , Ineke De Moortel , Jack Reid

Phase-mixing of Alfv\'en waves in the solar corona has been identified as one possible candidate to explain coronal heating. While this scenario is supported by observations of ubiquitous oscillations in the corona carrying sufficient wave…

Solar and Stellar Astrophysics · Physics 2017-05-17 Paolo Pagano , Ineke De Moortel

Context: This paper investigates the effectiveness of phase mixing as a coronal heating mechanism. A key quantity is the wave damping rate, $\gamma$, defined as the ratio of the heating rate to the wave energy. Aims: We investigate whether…

Solar and Stellar Astrophysics · Physics 2019-12-11 A. P. K. Prokopyszyn , A. W. Hood

Phase mixing has long been understood to be a viable mechanism for expediting the dissipation of Alfv\'en wave energy resulting in the subsequent heating of the solar atmosphere. To fulfil the conditions necessary for phase mixing to occur,…

Solar and Stellar Astrophysics · Physics 2025-06-11 Max McMurdo , Istvan Ballai , Gary Verth , Viktor Fedun

Context. It is known that Alfv\'en and magnetoacoustic waves both contribute to the heating of the solar chromosphere and drive plasma outflows. In both cases, the thermalization of the wave energy occurs due to ion-neutral collisions, but…

Solar and Stellar Astrophysics · Physics 2022-11-24 M. Pelekhata , K. Murawski , S. Poedts

We consider a series of MHD simulations in which a small amplitude, transverse velocity perturbation is introduced into a complex magnetic field. We analysed the deformation of the wave fronts as the perturbation propagates through the…

Solar and Stellar Astrophysics · Physics 2019-09-11 Thomas Howson , Ineke De Moortel , Jack Reid , Alan Hood

Phase mixing of Alfv\'en waves has been studied extensively as a possible coronal heating mechanism but without the full thermodynamic consequences considered self-consistently. It has been argued that in some cases, the thermodynamic…

Solar and Stellar Astrophysics · Physics 2020-04-01 H. J. Van Damme , I. De Moortel , P. Pagano , C. D. Johnston

Our study investigates the properties of Alfv\'en waves in partially ionised solar plasmas in the presence of steady, field-aligned, flows of charged and neutral particles. Our work aims to understand how such flows modify wave propagation…

Solar and Stellar Astrophysics · Physics 2025-11-17 Nada F. Alshehri , Istvan Ballai , Viktor Fedun , Gary Verth

In this paper we show that the phase mixing of continuum Alfv\'{e}n waves and/or continuum slow waves in magnetic structures of the solar atmosphere as, e.g., coronal arcades, can create the illusion of wave propagation across the magnetic…

Solar and Stellar Astrophysics · Physics 2015-10-21 T. Kaneko , M. Goossens , R. Soler , J. Terradas , T. Van Doorsselaere , T. Yokoyama , A. N. Wright

Kink oscillations of a coronal loop are observed and studied in detail because they provide a unique probe into the structure of coronal loops through MHD seismology and a potential test of coronal heating through the phase-mixing of…

Solar and Stellar Astrophysics · Physics 2018-08-29 P. Pagano , D. J. Pascoe , I. De Moortel

Phase mixing of Alfven waves is one of the most promising mechanisms for heating of the solar atmosphere. The damping of waves in this case requires small transversal scales, relative to the magnetic field direction. Here this requirement…

Solar and Stellar Astrophysics · Physics 2023-11-07 Max McMurdo , Istvan Ballai , Gary Verth , Abdulaziz Alharbi , Viktor Fedun

Observations show that transverse magnetohydrodynamic (MHD) waves and flows are often simultaneously present in magnetic loops of the solar corona. The waves are resonantly damped in the Alfv\'en continuum because of plasma and/or magnetic…

Solar and Stellar Astrophysics · Physics 2019-03-06 Roberto Soler

The origin and evolution of the 1/f power law observed in the energy spectrum of solar coronal and solar wind fluctuations at scales of around an hour is not entirely understood. Several existing theories aim at explaining it, involving…

Solar and Stellar Astrophysics · Physics 2022-10-26 Norbert Magyar , Tom Van Doorsselaere

Alfvenic waves are thought to play an important role in coronal heating and solar wind acceleration. Here we investigate the dissipation of standing Alfven waves due to phase mixing at the presence of steady flow and sheared magnetic field…

Solar and Stellar Astrophysics · Physics 2015-06-15 Z. Fazel , H. Ebadi

Context. We address the heating of the solar chromosphere and the related generation of plasma inflows and outflows. Aims. We attempt to detect variations in ion temperature and vertical plasma flows, which are driven by impulsively excited…

Solar and Stellar Astrophysics · Physics 2021-07-27 M. Pelekhata , K. Murawski , S. Poedts

The heating of the solar corona and solar wind, through suprathermal particles and kinetic Alfv\'en waves within the 0 - 10 $R_{\rm Sun}$ range, has been a subject of great interest for many decades. This study investigates the acceleration…

Solar and Stellar Astrophysics · Physics 2025-02-05 S. Ayaz , Gary P. Zank , Imran A. Khan , G. Li , Yeimy J. Rivera

Aims: This paper presents 2.5D numerical experiments of Alfv\'en wave phase mixing and aims to assess the effects of nonlinearities on wave behaviour and dissipation. In addition, this paper aims to quantify how effective the model…

Solar and Stellar Astrophysics · Physics 2019-04-17 Alexander Prokopyszyn , Alan Hood , Ineke De Moortel

Being directly observed in the Doppler shift and imaging data and indirectly as quasi-periodic pulsations in solar and stellar flares, slow magnetoacoustic waves offer an important seismological tool for probing many vital parameters of the…

Solar and Stellar Astrophysics · Physics 2022-05-25 Dmitrii Y. Kolotkov , Valery M. Nakariakov

The propagation of linear Alfv\'en wave pulses in an inhomogeneous plasma near a 2D coronal null point is investigated. When a uniform plasma density is considered, it is seen that an initially planar Alfv\'en wavefront remains planar,…

Solar and Stellar Astrophysics · Physics 2014-07-08 J. A. McLaughlin

A comprehensive understanding of solar coronal heating and charged particle acceleration remains one of the most critical challenges in space and astrophysical plasma physics. In this study, we explore the contribution of Alfv\'en waves,…

Solar and Stellar Astrophysics · Physics 2025-05-07 Syed Ayaz , Gary P. Zank , Imran A. Khan , Yeimy J. Rivera , Andreas Shalchi , L. -L. Zhao
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