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Shock waves driven by fast and wide coronal mass ejections (CMEs) are highly efficient particle accelerators involved in the production of solar energetic particle (SEP) events. The gradual SEP event measured by STEREO-A and B on October…

On 2008 January 10, the twin Solar Terrestrial Relations Observatory (STEREO) A and B spacecraft conducted a high time cadence study of the solar corona with the Extreme UltraViolet Imager (EUVI) instruments with the aim of investigating…

Solar and Stellar Astrophysics · Physics 2010-01-15 M. S. Marsh , R. W. Walsh , S. Plunkett

A Moreton wave was detected in active region (AR) 12017 on 29 March 2014 with very high cadence with the Halpha Solar Telescope for Argentina (HASTA) in association with an X1.0 flare (SOL2014-03-29T17:48). Several other phenomena took…

Solar and Stellar Astrophysics · Physics 2017-02-13 Carlos Francile , Fernando M. López , Hebe Cremades , Cristina H. Mandrini , María Luisa Luoni , David M. Long

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

EUV jets situated in coronal holes are thought to play an important role in supplying heated material to the corona and solar wind. The multi-wavelength capabilities and high signal-to-noise of detectors on-board SDO allows for detailed…

Solar and Stellar Astrophysics · Physics 2015-06-17 K. Chandrashekhar , R. J. Morton , D. Banerjee , G. R. Gupta

Super-Alfv\'enic shock waves associated with coronal mass ejections (CMEs) can produce radio emission known as Type II bursts. In the absence of direct imaging, accurate estimates of coronal electron densities, magnetic field strengths and…

Solar and Stellar Astrophysics · Physics 2014-05-08 Pietro Zucca , Eoin P. Carley , D. Shaun Bloomfield , Peter T. Gallagher

Coronal mass ejections (CMEs) are thought to drive collisionless shocks in the solar corona, which in turn have been shown capable of accelerating solar energetic particles (SEPs) in minutes. It has been notoriously difficult to extract…

Solar and Stellar Astrophysics · Physics 2015-06-19 Kamen A. Kozarev , John C. Raymond , Vasili V. Lobzin , Michael Hammer

Observations of the off-limb corona with the SWAP wide-field telescope in the 174\,\AA\ passband onboard the PROBA2 mission provide an opportunity to study post-eruptive processes in the dimming regions. We investigate morphology, temporal…

Solar and Stellar Astrophysics · Physics 2020-03-26 F. Goryaev , V. Slemzin , D. Rodkin

For the first time, the kinematic evolution of a coronal wave over the entire solar surface is studied. Full Sun maps can be made by combining images from the Solar Terrestrial Relations Observatory satellites, Ahead and Behind, and the…

Solar and Stellar Astrophysics · Physics 2015-06-05 Oscar Olmedo , Angelos Vourlidas , Jie Zhang , Xin Cheng

Coronal mass ejections (CMEs) are large clouds of magnetized plasma ejected from the Sun, and are often associated with acceleration of electrons that can result in radio emission via various mechanisms. However, the underlying mechanism…

Solar and Stellar Astrophysics · Physics 2022-05-25 Lei Lu , Li Feng , Weiqun Gan

Large-scale, wave-like disturbances in extreme-ultraviolet (EUV) and type II radio bursts are often associated with coronal mass ejections (CMEs). Both phenomena may signify shock waves driven by CMEs. Taking EUV full-disk images at an…

Solar and Stellar Astrophysics · Physics 2015-06-22 Nariaki V. Nitta , Wei Liu , Nat Gopalswamy , Seiji Yashiro

A three-dimensional (3D) reconstruction of the 2007, May 20 partial-halo Coronal Mass Ejection (CME) has been made using STEREO/EUVI and STEREO/COR1 coronagraphic images. The trajectory and kinematics of the erupting filament have been…

Solar and Stellar Astrophysics · Physics 2015-06-19 Roberto Susino , Alessandro Bemporad , Sergio Dolei

The recent launch of the High resolution Coronal imager (Hi-C) provided a unique opportunity to study the EUV corona with unprecedented spatial resolution. We utilize these observations to investigate the properties of low frequency (50-200…

Solar and Stellar Astrophysics · Physics 2013-06-28 R. J. Morton , J. A. McLaughlin

Aims: We identify the source of fast-drifting decimetric-metric radio emission that is sometimes observed prior to the so-called flare continuum emission. Fast-drift structures and continuum bursts are also observed in association with…

Astrophysics · Physics 2008-08-26 S. Pohjolainen

We study the relationship between different wave phenomena associated with a coronal mass ejection (CME) observed on 05 Mar. 2000. EIT waves were observed in the images recorded by EIT at 195 {\AA}. The white-light LASCO/C2 images show…

Astrophysics · Physics 2008-01-08 N. -E. Raouafi , D. Tripathi

Extreme ultraviolet (EUV) coronal dimmings are often observed in response to solar eruptive events. These phenomena can be generated via several different physical processes. For space weather, the most important of these is the temporary…

Solar and Stellar Astrophysics · Physics 2016-10-12 James Paul Mason , Thomas N. Woods , David F. Webb , Barbara J. Thompson , Robin C. Colaninno , Angelos Vourlidas

We investigate the physical conditions of the sources of two metric Type-II bursts associated with CME expansions with the aim of verifying the relationship between the shocks and the CMEs, comparing the heights of the radio sources and the…

Solar and Stellar Astrophysics · Physics 2015-06-11 R. D. Cunha-Silva , F. C. R. Fernandes , C. L. Selhorst

The Sun regularly produces large-scale eruptive events, such as coronal mass ejections (CMEs) that can drive shock waves through the solar corona. Such shocks can result in electron acceleration and subsequent radio emission in the form of…

Solar and Stellar Astrophysics · Physics 2020-01-15 Ciara A. Maguire , Eoin P. Carley , Joseph McCauley , Peter T. Gallagher

We analyse multiwavelength observations of an M2.9/1N flare that occurred in AR NOAA 11112 on 16 October 2010. AIA 211 {\AA} EUV images reveal the presence of a faster coronal wave (decelerating from ~1390 to ~830 km/s) propagating ahead of…

Solar and Stellar Astrophysics · Physics 2016-10-26 Pankaj Kumar , K. -S. Cho , P. F. Chen , S. -C. Bong , Sung-Hong Park

Coronal mass ejections (CMEs) are known drivers of large-scale waves in the low corona. However, wave dynamics in the extended corona and inner heliosphere remain largely unexplored. Here, we report the first observational and numerical…

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