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Coronal waves, significant solar phenomena, act as diagnostic tools for scientists studying solar atmosphere properties. Here, we present a novel observation detailing how a coronal wave event, associated with an X5.0 class flare,…

The initiation phase of CMEs is a very important aspect of solar physics, as these phenomena ultimately drive space weather in the heliosphere. This phase is known to occur between the photosphere and low corona, where many models introduce…

Solar and Stellar Astrophysics · Physics 2015-06-22 Jason P. Byrne , Huw Morgan , Dan B. Seaton , Hazel M. Bain , Shadia R. Habbal

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

Solar active regions (ARs) are the main sources of flares and coronal mass ejections (CMEs). NOAA AR 12089, which emerged on 2014 June 10, produced two C-class flares accompanied by CMEs within five hours after its emergence. When producing…

Solar and Stellar Astrophysics · Physics 2024-10-02 Hanzhao Yang , Lijuan Liu

Coronal mass ejections (CMEs) are large-scale eruptions of plasma from the coronae of stars. Understanding the plasma processes involved in CME initiation has applications to space weather forecasting and laboratory plasma experiments.…

Solar and Stellar Astrophysics · Physics 2018-03-21 Alexander W. James , Gherardo Valori , Lucie M. Green , Yang Liu , Mark C. M. Cheung , Yang Guo , Lidia van Driel-Gesztelyi

Aims. Coronal Mass Ejections (CMEs) are the most fascinating explosion in the solar system; however, their formation is still not fully understood. Methods. Here, we investigate a well-observed CME on 2021 May 07 that showed a typical…

Solar and Stellar Astrophysics · Physics 2022-10-26 B. T. Wang , X. Cheng , H. Q. Song , M. D. Ding

We study flare processes in the lower solar atmosphere using observational data for a M1-class flare of June 12, 2014, obtained by New Solar Telescope (NST/BBSO) and Helioseismic Magnetic Imager (HMI/SDO). The main goal is to understand…

Solar and Stellar Astrophysics · Physics 2016-04-20 I. N. Sharykin , V. M. Sadykov , A. G. Kosovichev , S. Vargas-Dominguez , I. V. Zimovets

Coronal dimmings associated with coronal mass ejections (CME) from the Sun have gained much attention since the late 1990s when they were first observed in high-cadence imagery of the SOHO/EIT and Yohkoh/SXT instruments. They appear as…

The magnetic breakout model explains a variety of solar eruptions, ranging from small-scale jets to large-scale coronal mass ejections (CMEs). Most of our previous studies are focused on jets and CMEs in single null-point topologies. Here,…

Solar and Stellar Astrophysics · Physics 2025-09-16 Pankaj Kumar , Judith T. Karpen , Peter F. Wyper , David Lario , Spiro K. Antiochos , C. Richard DeVore

Collimated ejections of plasma called "coronal hole jets" are commonly observed in polar coronal holes. However, such coronal jets are not only a specific features of polar coronal holes but they can also be found in coronal holes appearing…

Solar and Stellar Astrophysics · Physics 2015-05-18 G. Nistico' , V. Bothmer , S. Patsourakos , G. Zimbardo

Coronal mass ejections (CMEs) are one of the primary manifestations of solar activity and can drive severe space weather effects. Therefore, it is vital to work towards being able to predict their occurrence. However, many aspects of CME…

Solar and Stellar Astrophysics · Physics 2017-05-24 A. W. James , L. M. Green , E. Palmerio , G. Valori , H. A. S. Reid , D. Baker , D. H. Brooks , L. van Driel-Gesztelyi , E. K. J. Kilpua

The 3-part appearance of many CMEs arising from erupting filaments emerges from a large magnetic flux tube structure, consistent with the form of the erupting filament system. Other CMEs arising from erupting filaments lack a clear 3-part…

Space Physics · Physics 2016-06-15 Joe Hutton , Huw Morgan

Stealth coronal mass ejections (CMEs) are events in which there are almost no observable signatures of the CME eruption in the low corona but often a well-resolved slow flux rope CME observed in the coronagraph data. We present results from…

Solar and Stellar Astrophysics · Physics 2016-12-28 B. J. Lynch , S. Masson , Y. Li , C. R. DeVore , J. G. Luhmann , S. K. Antiochos , G. H. Fisher

Small-scale impulsive events, known as nanoflares, are thought to be one of the prime candidates that can keep the solar corona hot at its multi-million Kelvin temperature. Individual nanoflares are difficult to detect with the current…

Recent analysis of high-cadence white-light images taken by the Solar-Terrestrial RElations Observatory (STEREO) near solar maximum has revealed that outflowing density structures are released in an ubiquitous manner in the solar wind. The…

Solar and Stellar Astrophysics · Physics 2020-04-22 Léa Griton , Rui F. Pinto , Nicolas Poirier , Athanasios Kouloumvakos , Michaël Lavarra , Alexis P. Rouillard

We present the first IRIS Mg II slit-raster spectra that fully capture the genesis and coronal-jet-generating eruption of a central-disk solar minifilament. The minifilament arose in a negative-magnetic-polarity coronal hole. The Mg II…

Solar and Stellar Astrophysics · Physics 2022-11-09 Navdeep K. Panesar , Sanjiv K. Tiwari , Ronald L. Moore , Alphonse C. Sterling , Bart De Pontieu

Filament eruptions are magnetically driven violent explosions commonly observed on the Sun and late-type stars, sometimes leading to monster coronal mass ejections that directly affect the nearby planets' environments. More than a century…

Solar and Stellar Astrophysics · Physics 2025-03-19 Hechao Chen , Hui Tian , Quanhao Zhang , Chuan Li , Chun Xia , Xianyong Bai , Zhenyong Hou , Kaifan Ji , Yuanyong Deng , Xiao Yang , Ziyao Hu

Jets are defined as impulsive, well-collimated upflows, occurring in different layers of the solar atmosphere with different scales. Their relationship with coronal mass ejections (CMEs), another type of solar impulsive events, remains…

Solar and Stellar Astrophysics · Physics 2016-03-16 Ruisheng Zheng , Yao Chen , Guohui Du , Chuanyang Li

We report on the Atmospheric Imaging Assembly (AIA) observations of plasma outflows originating in a coronal dimming during the 2015 April 28th filament eruption. After the filament started to erupt, two flare ribbons formed, one of which…

Solar and Stellar Astrophysics · Physics 2021-01-20 Juraj Lörinčík , Jaroslav Dudík , Guillaume Aulanier , Brigitte Schmieder , Leon Golub

Impulsive solar energetic particle events are widely believed to be due to the prompt escape into the interplanetary medium of flare-accelerated particles produced by solar eruptive events. According to the standard model for such events,…

Solar and Stellar Astrophysics · Physics 2019-11-06 S. Masson , S. K. Antiochos , C. R. DeVore