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We present SDO/AIA observations of the interaction of a global EUV wave on 2011 June 7 with active regions (ARs), coronal holes (CHs) and coronal bright structures. The primary global wave has a three-dimensional dome shape, with…

Solar and Stellar Astrophysics · Physics 2015-06-03 Ting Li , Jun Zhang , Shuhong Yang , Wei Liu

A simple collisional three-component plasma model consisting of electrons, ions, and neutrals with arbitrary collision frequencies and dynamic time scales is considered. It is shown that the usual MHD-approach dealing with magnetic field…

Solar and Stellar Astrophysics · Physics 2014-02-20 Anatoly K. Nekrasov

Magnetohydrodynamic (MHD) waves are candidates for heating the solar chromosphere, although it is still unclear which mode of the wave is dominant in heating. We perform two-dimensional radiative MHD simulation to investigate the…

Solar and Stellar Astrophysics · Physics 2021-08-04 Yikang Wang , Takaaki Yokoyama , Haruhisa Iijima

We report a large-scale coronal wave (so-called "EIT wave") observed with high cadence by EUVI onboard STEREO in association with the GOES B9.5 flare and double CME event on 19 May 2007. The EUVI instruments provide us with the…

Astrophysics · Physics 2009-11-13 Astrid M. Veronig , Manuela Temmer , Bojan Vrsnak

We report the first unambiguous quasi-periodic large-scale extreme-ultraviolet (EUV) wave or shock that was detected by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. During the whip-like unwinding eruption of a…

Solar and Stellar Astrophysics · Physics 2019-03-06 Yuandeng Shen , P. F. Chen , Ying D. Liu , Kazunari Shibata , Zehao Tang , Yu Liu

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

We compute electromagnetic wave propagation through the magnetosphere of a magnetar. The magnetosphere is modeled as the QED vacuum and a cold, strongly magnetized plasma. The background field and electromagnetic waves are treated…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Dan Mazur , Jeremy S. Heyl

The detailed observational analysis of a homologous Extreme-ultraviolet (EUV) wave event is presented to study the driving mechanism and the physical property of the EUV waves, combining high resolution data taken by the Solar Dynamics…

Solar and Stellar Astrophysics · Physics 2018-07-25 Yuandeng Shen , Yu Liu , Ying D. Liu , Jiangtao Su , Zehao Tang , Yuhu Miao

The efficacy of fast/slow MHD mode conversion in the surface layers of sunspots has been demonstrated over recent years using a number of modelling techniques, including ray theory, perturbation theory, differential eigensystem analysis,…

Astrophysics · Physics 2009-11-13 P. S. Cally , M. Goossens

An experimental investigation of nonlinear interactions between shear Alfv\'{e}n waves in a laboratory plasma is presented. Two Alfv\'{e}n waves, generated by a resonant cavity, are observed to beat together, driving a low frequency…

Plasma Physics · Physics 2009-11-11 T. A. Carter , B. Brugman , P. Pribyl , W. Lybarger

For almost 20 years the physical nature of globally propagating waves in the solar corona (commonly called "EIT waves") has been controversial and subject to debate. Additional theories have been proposed over the years to explain…

Observations reveal a correspondence between chromospheric type II spicules and bright upwardly moving fronts in the corona observed in the EUV band. However, theoretical considerations suggest that these flows are unlikely to be the main…

Solar and Stellar Astrophysics · Physics 2014-09-05 A. Petralia , F. Reale , S. Orlando , J. A. Klimchuk

Extreme ultraviolet (EUV) waves are impressive coronal propagating disturbances. They are closely associated with various eruptions, and can used for the global coronal seismology and the acceleration of solar energetic particles. Hence,…

Solar and Stellar Astrophysics · Physics 2020-05-27 Ruisheng Zheng , Yao Chen , Bing Wang , Hongqiang Song

There has been significant interest lately in the study of Electromagnetic (EM) waves interacting with magnetized plasmas. The variety of resonances and the existence of several pass and stop bands in the dispersion curve for different…

Plasma Physics · Physics 2025-07-01 Trishul Dhalia , Rohit Juneja , Amita Das

We study theoretically the mode conversion and the resonant absorption of high frequency electromagnetic waves into longitudinal modes in magnetized and stratified plasmas in the case where the external magnetic field is perpendicular to…

Plasma Physics · Physics 2022-01-25 Seulong Kim , Kihong Kim

We present results from global, three-dimensional magnetohydrodynamic (MHD) simulations of the solar wind/magnetosphere interaction. These MHD simulations are used to study ultra low frequency (ULF) pulsations in the Earth's magnetosphere…

Space Physics · Physics 2010-10-20 S. G. Claudepierre , S. R. Elkington , M. Wiltberger

We report a spectroscopic analysis of an EIT wave event that occurred in active region 11081 on 2010 June 12 and was associated with an M2.0 class flare. The wave propagated near circularly. The south-eastern part of the wave front passed…

Solar and Stellar Astrophysics · Physics 2015-05-28 F. Chen , M. D. Ding , P. F. Chen , L. K. Harra

We study the formation, evolution and structure of dissipative fronts produced by overtaking collisions of relativistic streams, with emphasis on strongly magnetized flows. The evolution of the system is followed using analytical approach…

Astrophysics · Physics 2009-10-30 Amir Levinson , Maurice H. P. M. van Putten

This work is an extension of Kaghashvili [1999] where ion-cyclotron wave dissipation channel for Alfv\'en waves was discussed. While our earlier study dealt with the mode coupling in the commonly discussed sense, here we study changes in…

Solar and Stellar Astrophysics · Physics 2014-02-10 Edisher Kh. Kaghashvili

In this work, we show that collisions of one type of nonlinear wave can lead to generation of a different kind of nonlinear wave. Specifically, we demonstrate the formation of topological solitons (or transition waves) via collisions of…

Applied Physics · Physics 2023-08-16 Hiromi Yasuda , Hang Shu , Weijian Jiao , Vincent Tournat , Jordan R. Raney