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In this study, we present the observations of extreme-ultraviolet (EUV) waves associated with an M6.5 flare on 2013 April 11. The event was observed by Solar Dynamics Observatory (SDO) in different EUV channels. The flare was also…

Solar and Stellar Astrophysics · Physics 2019-05-22 Aarti Fulara , Ramesh Chandra , P. F. Chen , Ivan Zhelyazkov , A. K. Srivastava , Wahab Uddin

We present the first unambiguous detection of quasi-periodic wave trains within the broad pulse of a global EUV wave (so-called "EIT wave") occurring on the limb. These wave trains, running ahead of the lateral CME front of 2-4 times…

Solar and Stellar Astrophysics · Physics 2012-08-17 Wei Liu , Leon Ofman , Nariaki V. Nitta , Markus J. Aschwanden , Carolus J. Schrijver , Alan M. Title , Theodore D. Tarbell

We examine the nature of large-scale, coronal, propagating wave fronts (``EIT waves'') and find they are incongruous with solutions using fast-mode MHD plane-wave theory. Specifically, we consider the following properties: non-dispersive…

Astrophysics · Physics 2009-06-23 M. J. Wills-Davey , C. E. DeForest , J. O. Stenflo

"EIT waves" are a globally propagating wavelike phenomenon. They were often interpreted as a fast-mode magnetoacoustic wave in the corona, despite various discrepancies between the fast-mode wave model and observations. To reconcile these…

Solar and Stellar Astrophysics · Physics 2011-04-18 P. F. Chen , Y. Wu

One of the major discoveries of the Extreme ultraviolet Imaging Telescope (EIT) on SOHO were intensity enhancements propagating over a large fraction of the solar surface. The physical origin(s) of the so-called `EIT' waves is still…

Solar and Stellar Astrophysics · Physics 2015-05-13 S. Patsourakos , A. Vourlidas , Y. -M. Wang , G. Stenborg , A. Thernisien

Context. Mounting evidence has shown that EUV waves consist of a fast-mode magnetohydrodynamic (MHD) wave (or shock wave) followed by a slower nonwave component, as predicted by the magnetic fieldline stretching model. However, not all…

Solar and Stellar Astrophysics · Physics 2025-06-25 Yuwei Li , J. H. Guo , Y. W. Ni , Z. Y. Zhang , P. F. Chen

Mutual conversion of various kinds of magnetohydrodynamic (MHD) waves can have profound impacts on wave propagation, energy transfer, and heating of the solar chromosphere and corona. Mode conversion occurs when an MHD wave travels through…

Solar and Stellar Astrophysics · Physics 2024-04-01 Pankaj Kumar , Valery M. Nakariakov , Judith T. Karpen , Kyung-Suk Cho

Extreme Ultraviolet (EUV) waves have been found for about 15 years. However, significant controversy remains over their physical natures and origins. In this paper, we report an EUV wave that was accompanied by an X1.9 flare and a partial…

Solar and Stellar Astrophysics · Physics 2015-06-05 Yuandeng Shen , Yu Liu

Coronal extreme-ultraviolet (EUV) waves are large-scale disturbances propagating in the corona, whose physical nature and origin have been discussed for decades. We report the first three dimensional (3D) radiative magneto-hydrodynamic…

Solar and Stellar Astrophysics · Physics 2021-04-21 Can Wang , Feng Chen , Mingde Ding

We present and interpret the observations of extreme ultraviolet (EUV) waves associated with a filament eruption on 2011 May 11.The filament eruption also produces a small B-class two ribbon flare and a coronal mass ejection (CME). The…

Solar and Stellar Astrophysics · Physics 2016-05-25 R. Chandra , P. F. Chen , A. Fulara , A. K. Srivastava , W. Uddin

We report on observations of an extreme-ultraviolet (EUV) wave event in the Sun on 2011 January 13 by \emph{Solar Terrestrial Relations Observatory} (\emph{STEREO}) and \emph{Solar Dynamics Observatory} (\emph{SDO}) in quadrature. Both the…

Solar and Stellar Astrophysics · Physics 2017-01-18 Weiguo Zong , Yu Dai

Quasi-periodic fast-propagating (QFP) magnetosonic waves and extreme ultraviolet (EUV) waves were proposed to be driven by solar flares and coronal mass ejections (CMEs), respectively. In this Letter, we present a detailed analysis of an…

Solar and Stellar Astrophysics · Physics 2019-01-18 Y. H. Miao , Y. Liu , Y. D. Shen , H. B. Li , Z. Z. Abidin , A. Elmhamdi , A. S. Kordi

The nature of CME-associated low corona propagating disturbances, 'EUV waves', has been controversial since their discovery by EIT on \textit{SOHO}. The low cadence, single viewpoint EUV images and the lack of simultaneous inner corona…

Solar and Stellar Astrophysics · Physics 2015-05-13 S. Patsourakos , A. Vourlidas

In this paper, we present the observations of two successive fast-mode extreme ultraviolet (EUV) wave events observed on 2016 July 23. Both fast-mode waves were observed by the Atmospheric Imaging Assembly (AIA) instrument on board the…

Solar and Stellar Astrophysics · Physics 2018-08-22 R. Chandra , P. F. Chen , R. Joshi , B. Joshi , B. Schmieder

"EIT waves" are a wavelike phenomenon propagating in the corona, which were initially observed in the extreme ultraviolet (EUV) wavelength by the EUV Imaging Telescope (EIT). Their nature is still elusive, with the debate between fast-mode…

Solar and Stellar Astrophysics · Physics 2015-05-18 H. Q. Yang , P. F. Chen

We report quadrature observations of an extreme-ultraviolet (EUV) wave event on 2011 January 27 obtained by the Extreme Ultraviolet Imager (EUVI) onboard \emph{Solar Terrestrial Relations Observatory} (\emph{STEREO}), and the Atmospheric…

Solar and Stellar Astrophysics · Physics 2015-06-11 Y. Dai , M. D. Ding , P. F. Chen , J. Zhang

We present the first SDO AIA observations of a global coronal EUV disturbance (so-called "EIT wave") revealed in unprecedented detail. The disturbance observed on 2010 April 8 exhibits two components: one diffuse pulse superimposed on which…

Solar and Stellar Astrophysics · Physics 2014-04-04 Wei Liu , Nariaki V. Nitta , Carolus J. Schrijver , Alan M. Title , Theodore D. Tarbell

In this study, we investigate an extreme ultraviolet (EUV) wave event on 2010 February 11, which occurred as a limb event from the Earth viewpoint and a disk event from the STEREO--B viewpoint. We use the data obtained by the Atmospheric…

Solar and Stellar Astrophysics · Physics 2021-09-22 Ramesh Chandra , P. F. Chen , Pooja Devi , Reetika Joshi , Brigette Schmieder , Yong-Jae Moon Wahab Uddin

The propagation of disturbances in the solar atmosphere is inherently three dimensional (3D), yet comprehensive studies on the spatial structure and dynamics of 3D wavefronts are scarce. Here we conduct high resolution 3D numerical…

Solar and Stellar Astrophysics · Physics 2024-12-19 Jialiang Hu , Jing Ye , Yuhao Chen , Zhixing Mei , Shanshan Xu , Jun Lin

Extreme ultraviolet (EUV) waves, spectacular horizontally propagating disturbances in the low solar corona, always trigger horizontal secondary waves (SWs) when they encounter ambient coronal structure. We present a first example of upward…

Solar and Stellar Astrophysics · Physics 2018-05-02 Ruisheng Zheng , Yao Chen , Shiwei Feng , Bing Wang , Hongqiang Song
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