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Coronal mass ejections (CMEs) are often accompanied by coronal dimming evident in extreme ultraviolet (EUV) and soft X-ray observations. The locations of dimming are sometimes considered to map footpoints of the erupting flux rope. As the…

Solar and Stellar Astrophysics · Physics 2016-07-06 J. X. Cheng , J. Qiu

We present observations and modeling of the magnetic field configuration, morphology, and dynamics of a large-scale, high-latitude filament eruption observed by the Solar Dynamics Observatory. We analyze the 2015 July 9-10 filament eruption…

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

Extreme ultraviolet (EUV) waves are large-scale propagating disturbances observed in the solar corona, frequently associated with coronal mass ejections and flares. They appear as faint, extended structures propagating from a source region…

Coronal rain is the most dramatic cooling phenomenon of the solar corona and an essential diagnostic tool for the coronal heating properties. A puzzling feature of the solar corona, besides the heating, is its EUV filamentary structure and…

We present SDO/AIA observation of three types of fast-mode propagating magnetosonic waves in a GOES C3.0 flare on 2013 April 23, which was accompanied by a prominence eruption and a broad coronal mass ejection (CME). During the fast rising…

Solar and Stellar Astrophysics · Physics 2021-11-24 Xinping Zhou , Yuandeng Shen , Jiangtao Su , Zehao Tang , Chengrui Zhou , Yadan Duan , Song Tan

Coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic feld that can produce adverse space weather at Earth and other locations in the Heliosphere. Due to the intrinsic multiscale nature of features in coronagraph…

Solar and Stellar Astrophysics · Physics 2011-04-25 Peter T. Gallagher , C. Alex Young , Jason P. Byrne , R. T. James McAteer

We present an investigation of the Extreme-Ultraviolet (EUV) wave linked to the flare that occurred on 28 October 2021, along with the associated coronal loop oscillation and type II radio burst. The EUV wave was observed by multi-viewpoint…

Solar and Stellar Astrophysics · Physics 2025-07-03 Pooja Devi , Ramesh Chandra , Arun Kumar Awasthi , Brigitte Schmieder , Reetika Joshi

Coronal Holes (CHs) are large-scale, low-density regions in the solar atmosphere which may expel high-speed solar wind streams that incite hazardous, geomagnetic storms. Coronal and solar wind models can predict these high-speed streams and…

Coronal mass ejections (CMEs) are large-scale expulsions of plasma and magnetic fields from the Sun into the heliosphere and are the most important driver of space weather. The geo-effectiveness of a CME is primarily determined by its…

Solar and Stellar Astrophysics · Physics 2023-10-26 Devojyoti Kansabanik

The Sun is an active star that can launch large eruptions of magnetised plasma into the heliosphere, called coronal mass ejections (CMEs). These ejections can drive shocks that accelerate particles to high energies, often resulting in radio…

Coronal mass ejections (CMEs) are the largest-scale eruptive phenomena in the solar system. Associated with enormous plasma ejections and energy release, CMEs have an important impact on the solar-terrestrial environment. Accurate…

Solar and Stellar Astrophysics · Physics 2022-06-29 Zihao Yang , Hui Tian , Xianyong Bai , Yajie Chen , Yang Guo , Yingjie Zhu , Xin Cheng , Yuhang Gao , Yu Xu , Hechao Chen , Jiale Zhang

There is a growing interest in searching for coronal mass ejections (CMEs) in other stellar systems because they are thought to be one of the important factors shaping planetary atmospheres. We investigated the possible spectral signatures…

Solar and Stellar Astrophysics · Physics 2025-04-08 Yu Xu , Hui Tian , Julián D. Alvarado-Gómez , Jeremy J. Drake , Gustavo Guerrero

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

A single case study of a CBP in an equatorial coronal hole with an exceptionally large size is investigated to extend our understanding of the formation of mini-filaments, their destabilisation and the origin of the eruption triggering the…

Solar and Stellar Astrophysics · Physics 2020-10-28 Maria S. Madjarska , Klaus Galsgaard , Duncan H. Mackay , Kostadinka Koleva , Momchil Dechev

We study the kinematical characteristics and 3D geometry of a large-scale coronal wave that occurred in association with the 26 April 2008 flare-CME event. The wave was observed with the EUVI instruments aboard both STEREO spacecraft…

Solar and Stellar Astrophysics · Physics 2015-05-27 M. Temmer , A. M. Veronig , N. Gopalswamy , S. Yashiro

The morphology and heliospheric impact of coronal mass ejections (CMEs) are strongly shaped by their preeruptive magnetic configuration and surrounding coronal environment, yet these influences remain difficult to constrain observationally.…

We re-examine the physical relationship between Extreme-UltraViolet (EUV) waves and type II radio bursts. It has been often thought that they are two observational aspects of a single coronal shock wave. However, a lack of their speed…

Solar and Stellar Astrophysics · Physics 2021-11-17 Aarti Fulara , Ryun-Young Kwon

Stellar flares and coronal mass ejections (CMEs) can strip planetary atmospheres, reducing the potential habitability of terrestrial planets. While flares have been observed for decades, stellar CMEs remain elusive. Extreme ultraviolet…

Solar and Stellar Astrophysics · Physics 2025-07-30 James Paul Mason , Allison Youngblood , Kevin France , Astrid M. Veronig , Meng Jin

Coronal Mass Ejections (CMEs) are the primary source of strong space weather disturbances at Earth. Their geoeffectiveness is largely determined by their dynamic pressure and internal magnetic fields, for which reliable predictions at Earth…

Solar and Stellar Astrophysics · Physics 2019-06-26 Camilla Scolini , Luciano Rodriguez , Marilena Mierla , Jens Pomoell , Stefaan Poedts