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Understanding and predicting the structure and evolution of coronal mass ejections (CMEs) in the heliosphere remains one of the most sought-after goals in heliophysics and space weather research. A powerful tool for improving current…

The important role played by magnetic reconnection in the early acceleration of coronal mass ejections (CMEs) has been widely discussed. However, as CMEs may have expansion speeds comparable to their propagation speeds in the corona, it is…

Solar and Stellar Astrophysics · Physics 2022-07-20 Bin Zhuang , Noé Lugaz , Manuela Temmer , Tingyu Gou , Nada Al-Haddad

In this paper we present a statistical study of the kinematics of 28894 coronal mass ejections (CMEs) recorded by the Large Angle and Spectrometric Coronagraph (LASCO) on board the Solar and Heliospheric Observatory spacecraft from 1996…

Solar and Stellar Astrophysics · Physics 2020-10-07 Anitha Ravishankar , Grzegorz Michalek , Seiji Yashiro

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…

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…

Despite studying Coronal Mass Ejections (CMEs) for several years, we are yet to have a complete understanding of their kinematics. In this regard, the change in kinematics of the CMEs, as they travel from the inner corona ($<$ 3R$_\odot)$…

Solar and Stellar Astrophysics · Physics 2021-10-13 Satabdwa Majumdar , Ritesh Patel , Vaibhav Pant , Dipankar Banerjee

In order to advance our understanding of the dynamic interactions between coronal mass ejections (CMEs) and the magnetized solar wind, we investigate the impact of magnetic erosion on the well-known aerodynamic drag force acting on CMEs…

Solar and Stellar Astrophysics · Physics 2023-07-25 Sotiris Stamkos , Spiros Patsourakos , Angelos Vourlidas , Ioannis A. Daglis

Coronal mass ejections (CMEs) from pseudostreamers represent a significant fraction of large-scale eruptions from the Sun. In some cases, these CMEs take a narrow jet-like form reminiscent of coronal jets; in others, they have a much…

Solar and Stellar Astrophysics · Physics 2024-09-13 P. F. Wyper , B. J. Lynch , C. R. DeVore , P. Kumar , S. K. Antiochos , L. K. S. Daldorff

As the most energetic eruptions in the solar system, coronal mass ejections (CMEs) can produce shock waves at both their front and flanks as they erupt from the Sun into the heliosphere. However, the amount of energy produced in these…

Solar and Stellar Astrophysics · Physics 2015-06-23 David M. Long , Deborah Baker , David R. Williams , Eoin P. Carley , Peter T. Gallagher , Pietro Zucca

The radial expansion of coronal mass ejections (CMEs) is known to occur from remote observations; from the variation of their properties with radial distance; and from local in situ plasma measurements showing a decreasing speed profile…

Space Physics · Physics 2020-08-26 N. Lugaz , T. M. Salman , R. M. Winslow , N. Al-Haddad , C. J. Farrugia , B. Zhuang , A. B. Galvin

Coronal mass ejections (CMEs) are solar eruptions that involve large-scale changes to the magnetic topology of an active region. There exists a range of models for CME onset which are based on twisted or sheared magnetic field above a…

Solar and Stellar Astrophysics · Physics 2024-09-12 Aslam Ottupara , David MacTaggart , Tom Williams , Lyndsay Fletcher , Paolo Romano

Recent Solar Dynamic Observatory observations reveal that coronal mass ejections (CMEs) consist of a multi-temperature structure: a hot flux rope and a cool leading front (LF). The flux rope first appears as a twisted hot channel in the…

Solar and Stellar Astrophysics · Physics 2015-06-12 X. Cheng , J. Zhang , D. M. Ding , Y. Liu , W. Poomvises

After the {\em Solar and Heliospheric Observatory} ({\em SOHO}) was launched in 1996, the aboard Extreme Ultraviolet Imaging Telescope (EIT) observed a global coronal wave phenomenon, which was initially named "EIT wave" after the…

Solar and Stellar Astrophysics · Physics 2016-04-28 P. F. Chen

It has been established that Coronal Mass Ejections (CMEs) may have significant impact on terrestrial magnetic field and lead to space weather events. In the present study, we selected several CMEs which are associated with filament…

Solar and Stellar Astrophysics · Physics 2019-01-30 Kunjal Dave , Wageesh Mishra , Nandita Srivastava , R. M. Jadhav

We investigated if signatures of coronal mass ejections (CMEs) can be retrieved in the differential emission measure (DEM) from Sun-as-a-star extreme-ultraviolet (EUV) observations. We analyzed 16 major, eruptive (i.e., associated with…

Solar and Stellar Astrophysics · Physics 2026-05-05 Angelos Michailidis , Spiros Patsourakos

The state of the space environment plays a significant role for forecasting of geomagnetic storms produced by disturbances of the solar wind (SW). Coronal mass ejections (CMEs) passing through the heliosphere often have a prolonged (up to…

Space Physics · Physics 2022-04-27 Vladimir Slemzin , Farid Goryaev , Denis Rodkin

Coronal mass ejections (CMEs) are the largest type of eruptions on the Sun and the main driver of severe space weather at the Earth. In this study, we implement a force-free spheromak CME description within 3-D magnetohydrodynamic…

Solar and Stellar Astrophysics · Physics 2022-12-20 Gordon J. Koehn , Ravindra T. Desai , Emma E. Davies , Robert J. Forsyth , Jonathan P. Eastwood , Stefaan Poedts

Using high time cadence images from the STEREO EUVI, COR1 and COR2 instruments, we derived detailed kinematics of the main acceleration stage for a sample of 95 CMEs in comparison with associated flares and filament eruptions. We found that…

Solar and Stellar Astrophysics · Physics 2015-06-05 B. M. Bein , S. Berkebile-Stoiser , A. M. Veronig , M. Temmer , B. Vrsnak

One of hot topics in the solar physics are the so-called 'stealth' coronal mass ejections (CME), which are not associated with any appreciable energy release events in the lower corona, such as the solar flares. It is often assumed recently…

Solar and Stellar Astrophysics · Physics 2025-07-15 Yurii V. Dumin , Boris V. Somov

Coronal mass ejections (CMEs) are massive expulsions of magnetised plasma from a star, and are the largest contributors to space weather in the Solar System. CMEs are theorized to play a key role in planetary atmospheric erosion, especially…