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The solar surface and atmosphere are highly dynamic plasma environments, which evolve over a wide range of temporal and spatial scales. Large-scale eruptions, such as coronal mass ejections, can be accelerated to millions of kilometres per…

We reconstruct the morphology and kinematics of a series of small transients that erupt from the Sun on 2021 April 24 using observations primarily from Parker Solar Probe (PSP). These sequential small coronal mass ejections (CMEs) may be…

Solar and Stellar Astrophysics · Physics 2023-08-16 Brian E. Wood , Phillip Hess , Yu Chen , Qiang Hu

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

On February 12, 2021 two subsequent eruptions occurred above the West limb, as seen along the Sun-Earth line. The first event was a typical slow Coronal Mass Ejection (CME), followed $\sim 7$ hours later by a smaller and collimated…

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

Coronal mass ejections (CMEs) and other solar eruptive phenomena can be physically linked by combining data from a multitude of ground-based and space-based instruments alongside models, however this can be challenging for automated…

We have performed, for the first time, the successful automated detection of Coronal Mass Ejections (CMEs) in data from the inner heliospheric imager (HI-1) cameras on the STEREO A spacecraft. Detection of CMEs is done in time-height maps…

Solar and Stellar Astrophysics · Physics 2016-12-14 V. Pant , S. Willems , L. Rodriguez , M. Mierla , D. Banerjee , J. A. Davies

Coronal Mass Ejections (CMEs) are space weather phenomena capable of causing significant disruptions to both space- and ground-based infrastructure. The timely and accurate detection and prediction of CMEs is a crucial steps towards…

Solar and Stellar Astrophysics · Physics 2025-10-16 Maike Bauer , Justin Le Louëdec , Tanja Amerstorfer , Luke Barnard , David Barnes , Helmut Lammer

Energetic particle populations are ubiquitous throughout the Universe. In our solar system, the most prominent sources of energetic particles are solar flares or collisionless shocks often driven by huge eruptions of magnetised plasma…

The explosion of space weather research since the early 1990s has been partly fueled by the unprecedented, uniform, and extended observations of solar disturbances from space and ground based instruments. Coronal mass ejections (CMEs) from…

Solar and Stellar Astrophysics · Physics 2022-11-15 Nat Gopalswamy

Solar coronal mass ejections (CMEs) are the most significant drivers of adverse space weather at Earth, but the physics governing their propagation through the heliosphere is not well understood. While stereoscopic imaging of CMEs with the…

Solar and Stellar Astrophysics · Physics 2010-11-15 Jason P. Byrne , Shane A. Maloney , R. T. James McAteer , Jose M. Refojo , Peter T. Gallagher

We report on the first comprehensive study of the coronal mass ejections (CMEs) associated with $\sim$25 MeV solar energetic proton (SEP) events in 1980-2013 observed in the low/inner corona by the Mauna Loa Solar Observatory (MLSO) Mk3 and…

Solar and Stellar Astrophysics · Physics 2023-08-28 I. G. Richardson , O. C. St Cyr , J. T. Burkepile , H. Xie , B. J. Thompson

We study dynamics of relativistic Coronal Mass Ejections (CMEs), from launching by shearing of foot-points (either slowly - the ``Solar flare'' paradigm, or suddenly - the ``star quake" paradigm), to propagation in the preceding magnetar…

High Energy Astrophysical Phenomena · Physics 2023-08-14 Praveen Sharma , Maxim Barkov , Maxim Lyutikov

We examine the two kinds of major energetic phenomena that occur in the solar atmosphere: eruptive and confined events. The former describes flares with associated coronal mass ejections (CMEs), while the latter denotes flares without…

Astrophysics · Physics 2010-11-05 Yuming Wang , Jie Zhang

Low frequency dynamic spectra of radio bursts from nearby stars offer the best chance to directly detect the stellar signature of transient mass loss on low mass stars. Crosley et al. (2016) proposes a multi-wavelength methodology to…

Solar and Stellar Astrophysics · Physics 2017-08-23 M. K. Crosley , R. A. Osten , C. Norman

We investigate the initiation and formation of Coronal Mass Ejections (CMEs) via detailed two-viewpoint analysis of low corona observations of a relatively fast CME acquired by the SECCHI instruments aboard the STEREO mission. The event…

Solar and Stellar Astrophysics · Physics 2015-06-03 A. Vourlidas , P. Syntelis , K. Tsinganos

We present results from a set of numerical simulations aimed at exploring the mechanism of coronal mass ejection (CME) suppression in active stars by an overlying large-scale magnetic field. We use a state-of-the-art 3D magnetohydrodynamic…

Solar and Stellar Astrophysics · Physics 2018-08-08 Julián D. Alvarado-Gómez , Jeremy J. Drake , Ofer Cohen , Sofia P. Moschou , Cecilia Garraffo

We perform a time-dependent ionization analysis to constrain plasma heating requirements during a fast partial halo coronal mass ejection (CME) observed on 2000 June 28 by the Ultraviolet Coronagraph Spectrometer (UVCS) aboard the Solar and…

Solar and Stellar Astrophysics · Physics 2011-06-21 N. A. Murphy , J. C. Raymond , K. E. Korreck

Flares and coronal mass ejections (CMEs) are important for the evolution of the atmospheres of planets and their potential habitability, particularly for planets orbiting M stars at a distance < 0.4 AU. Detections of CMEs on these stars…

Solar and Stellar Astrophysics · Physics 2020-05-06 Priscilla Muheki , Eike. W. Guenther , Tom Mutabazi , Edward Jurua

Solar flares and coronal mass ejections (CMEs) are closely coupled through magnetic reconnection. CMEs are usually accelerated impulsively within the low solar corona, synchronized with the impulsive flare energy release. We investigate the…