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Coronal mass ejections (CMEs) are major drivers of geomagnetic storms, which may cause severe space weather effects. Automating the detection, tracking, and three-dimensional (3D) reconstruction of CMEs is important for operational…

Solar and Stellar Astrophysics · Physics 2024-06-06 Jiahui Shan , Huapeng Zhang , Lei Lu , Yan Zhang , Li Feng , Yunyi Ge , Jianchao Xue , Shuting Li

We report on the first direct in situ measurements of a fast coronal mass ejection (CME) and shock in the corona, which occurred on 2022 September 5. In situ measurements from the Parker Solar Probe (PSP) spacecraft near perihelion suggest…

Solar and Stellar Astrophysics · Physics 2024-01-15 Ying D. Liu , Bei Zhu , Hao Ran , Huidong Hu , Mingzhe Liu , Xiaowei Zhao , Rui Wang , Michael L. Stevens , Stuart D. Bale

Most simulations of coronal mass ejections (CMEs) to date either focus on the interplanetary propagation of a giant plasma "blob" without paying too much attention to its origin and to the formation process or they focus on the complex…

Solar and Stellar Astrophysics · Physics 2014-11-20 N. Lugaz , I. I. Roussev , I. V. Sokolov , C. Jacobs

Coronal mass ejections (CMEs) are large-scale ejections of magnetized plasma from the Sun and are associated with the most extreme space weather events. The geoeffectiveness of a CME is primarily determined by the southward component of its…

Solar and Stellar Astrophysics · Physics 2024-07-09 Devojyoti Kansabanik , Angelos Voulidas

Understanding the role of magnetic reconnection in the heating and dynamics of the solar atmosphere requires detailed observational data of any observable aspect of the reconnection process, including small-scale features such as plasmoids.…

Solar and Stellar Astrophysics · Physics 2024-07-17 Ø. H. Færder , D. Nóbrega-Siverio , M. Carlsson , J. Martínez-Sykora

An extreme ultraviolet (EUV) close-up view of the Sun offers unprecedented detail of heating events in the solar corona. Enhanced temporal and spatial images obtained by the Solar Orbiter during its first science perihelion enabled us to…

Solar and Stellar Astrophysics · Physics 2024-10-22 Rui Wang , Ying D. Liu , L. P. Chitta , Huidong Hu , Xiaowei Zhao

Stealth coronal mass ejection (CMEs) are eruptions from the Sun that are not associated with appreciable low-coronal signatures. Because they often cannot be linked to a well-defined source region on the Sun, analysis of their initial…

Solar and Stellar Astrophysics · Physics 2021-10-19 Erika Palmerio , Christina Kay , Nada Al-Haddad , Benjamin J. Lynch , Wenyuan Yu , Michael L. Stevens , Sanchita Pal , Christina O. Lee

The Time-of-Arrival (ToA) of coronal mass ejections (CME) at Earth is a key parameter due to the space weather phenomena associated with the CME arrival, such as intense geomagnetic storms. Despite the incremental use of new instrumentation…

Solar coronal mass ejections (CMEs) can catch up and interact with preceding CMEs and solar wind structures to undergo rotation and deflection during their propagation. We aim to show how interactions undergone by a CME in the corona and…

Solar and Stellar Astrophysics · Physics 2023-07-12 Anwesha Maharana , Camilla Scolini , Brigitte Schmieder , Stefaan Poedts

The solar wind transients propagating out in the inner heliosphere can be observed in white-light images from Heliospheric Imager-1 (HI1), an instrument of the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) on board…

Solar and Stellar Astrophysics · Physics 2021-05-12 Xiaolei Li , Yuming Wang , Jingnan Guo , Rui Liu , Bin Zhuang

The expanding magnetic flux in coronal mass ejections (CMEs) often forms a cavity. A spherical model is simultaneously fit to STEREO EUVI and COR1 data of an impulsively accelerated CME on 25 March 2008, which displays a well-defined…

Solar and Stellar Astrophysics · Physics 2015-05-19 S. Patsourakos , A. Vourlidas , B. Kliem

Coronal Mass Ejections (CMEs), as they can inject a large amounts of mass and magnetic flux into the interplanetary space, are the primary source of space weather phenomena on the Earth. The present review first briefly introduces the solar…

Solar and Stellar Astrophysics · Physics 2023-03-28 Wageesh Mishra , Luca Teriaca

Coronal Mass Ejections (CMEs) are one of the primary drivers of extreme space weather. They are large eruptions of mass and magnetic field from the solar corona and can travel the distance between Sun and Earth in half a day to a few days.…

Solar and Stellar Astrophysics · Physics 2020-05-13 Talwinder Singh , Mehmet S. Yalim , Nikolai V. Pogorelov , Nat Gopalswamy

Source imaging of solar radio bursts can be used to track energetic electrons and associated magnetic structures. Here we present a combined analysis of data at different wavelengths for an eruption associated with a moving type-IV (t-IVm)…

Solar and Stellar Astrophysics · Physics 2019-01-09 V. Vasanth , Yao Chen , Maoshui Lv , Hao Ning , Chuangyang Li , Shiwei Feng , Zhao Wu , Guohui Du

We carry out an analysis of the evacuated mass from three coronal dimming regions observed by the {\it Atmospheric Imaging Assembly} (AIA) on board the {\it Solar Dynamics Observatory}. The three events are unambiguously identified with…

Solar and Stellar Astrophysics · Physics 2016-12-21 Fernando M. López , Hebe Cremades , Federico A. Nuevo , Laura A. Balmaceda , Alberto A. Vásquez

Interplanetary coronal mass ejections (ICMEs) are major drivers of space weather disturbances, posing risks to both technological infrastructure and human activities. Automatic detection of ICMEs in solar wind in situ data is essential for…

Space Physics · Physics 2026-03-03 H. T. Rüdisser , G. Nguyen , J. Le Louëdec , E. E. Davies , C. Möstl

Intense solar energetic particle (SEP) events data, associated with ground level enhancements (GLEs), occurred during 1989 to 2006 have been obtained from the spectrometers on board GOES spacecraft in the energy range 10-100 MeV. The…

Solar and Stellar Astrophysics · Physics 2017-08-02 P. K. Manoharan , G. Agalya

Forecasting the geomagnetic effects of solar storms, known as coronal mass ejections (CMEs), is currently severely limited by our inability to predict the magnetic field configuration in the CME magnetic core and by observational effects of…

We report on the closest view of a coronal mass ejection observed by the Parker Solar Probe (PSP)/Wide-field Imager for {Parker} Solar PRobe (WISPR) instrument on September 05, 2022, when PSP was traversing from a distance of…

Solar and Stellar Astrophysics · Physics 2023-08-23 Ritesh Patel , Matthew J. West , Daniel B. Seaton , Phillip Hess , Tatiana Niembro , Katharine K. Reeves

Coronal mass ejections (CMEs) on the early Sun may have profoundly influenced the planetary atmospheres of early Solar System planets. Flaring young solar analogues serve as excellent proxies for probing the plasma environment of the young…