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The free energy that is dissipated in a magnetic reconnection process of a solar flare, generally accompanied by a coronal mass ejection (CME), has been considered as the ultimate energy source of the global energy budget of solar flares in…

Solar and Stellar Astrophysics · Physics 2019-06-19 Markus J. Aschwanden , Nat Gopalswamy

We investigate the Sun-Earth dynamics of a set of eight well observed solar coronal mass ejections (CMEs) using data from the STEREO spacecraft. We seek to quantify the extent to which momentum coupling between these CMEs and the ambient…

Solar and Stellar Astrophysics · Physics 2015-08-24 Nishtha Sachdeva , Prasad Subramanian , Robin Colaninno , Angelos Vourlidas

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

Investigating the heliospheric evolution and consequences of Coronal mass ejections (CMEs) is critical to understanding the solar-terrestrial relationship. For the first time, Heliospheric Imagers (HIs) onboard STEREO, providing multiple…

Solar and Stellar Astrophysics · Physics 2022-04-22 Wageesh Mishra

We present a study of coronal mass ejections (CMEs) which impacted one of the STEREO spacecraft between January 2008 and early 2010. We focus our study on 20 CMEs which were observed remotely by the Heliospheric Imagers (HIs) onboard the…

Solar and Stellar Astrophysics · Physics 2012-09-12 N. Lugaz , P. Kintner , C. Moestl , L. K. Jian , C. J. Davis , C. J. Farrugia

The prediction of the arrival time for fast coronal mass ejections (CMEs) and their associated shocks is highly desirable in space weather studies. In this paper, we use two shock propagation models, i.e. Data Guided Shock Time Of Arrival…

Solar and Stellar Astrophysics · Physics 2016-10-19 Xinhua Zhao , Ying D. Liu , Bernd Inhester , Xueshang Feng , Thomas Wiegelmann , Lei Lu

The solar wind drag-based model is a widely used framework for predicting the propagation of Coronal Mass Ejections (CMEs) through interplanetary space. This model primarily considers the aerodynamic drag exerted by the solar wind on CMEs.…

Solar and Stellar Astrophysics · Physics 2025-02-19 Mattia Rossi , Sabrina Guastavino , Michele Piana , Anna Maria Massone

To understand the global-scale physical processes behind coronal mass ejection (CME)-driven geomagnetic storms and predict their intensity as a space weather forecasting measure, we develop an interplanetary CME flux rope-magnetosphere…

Solar and Stellar Astrophysics · Physics 2023-07-04 Souvik Roy , Dibyendu Nandy

Solar coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic field from the Sun into the corona and interplanetary space. They are the most significant drivers of adverse space weather at Earth and other locations in…

Solar and Stellar Astrophysics · Physics 2012-02-20 Jason P. Byrne

We demonstrate how the parameters of a Gibson-Low flux-rope-based coronal mass ejection (CME) can be constrained using remote observations. Our Multi Scale Fluid-Kinetic Simulation Suite (MS-FLUKSS) has been used to simulate the propagation…

Solar and Stellar Astrophysics · Physics 2019-04-24 Talwinder Singh , Mehmet Sarp Yalim , Nikolai Pogorelov , Nat Gopalswamy

Coronal mass ejections (CMEs) are primary drivers of space weather and studying their evolution in the inner heliosphere is vital to prepare for a timely response. Solar wind streams, acting as background, influence their propagation in the…

Solar and Stellar Astrophysics · Physics 2023-10-30 Prateek Mayank , Bhargav Vaidya , Wageesh Mishra , D. Chakrabarty

The Sun constantly releases radiation and plasma into the heliosphere. Sporadically, the Sun launches solar eruptions such as flares and coronal mass ejections (CMEs). CMEs carry away a huge amount of mass and magnetic flux with them. An…

Solar and Stellar Astrophysics · Physics 2023-05-02 Khalid A. Alobaid , Jason T. L. Wang

The May 10, 2024 space weather event stands out as the most powerful storm recorded during the current solar cycle. This study employs a numerical framework utilizing a semi-empirical coronal model, along with HUXt (Heliospheric Upwind…

Space Physics · Physics 2024-11-14 Smitha V. Thampi , Ankush Bhaskar , Prateek Mayank , Bhargav Vaidya , Indu Venugopal

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

A method for the full three-dimensional (3-D) reconstruction of the trajectories of coronal mass ejections (CMEs) using Solar TErrestrial RElations Observatory (STEREO) data is presented. Four CMEs that were simultaneously observed by the…

Solar and Stellar Astrophysics · Physics 2009-05-14 Shane A. Maloney , Peter T. Gallagher , R. T. James McAteer

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

A study of the kinematics and arrival times of CMEs at Earth, derived from time-elongation maps (J-maps) constructed from STEREO/Heliospheric Imager (HI) observations, provides an opportunity to understand the heliospheric evolution of CMEs…

Solar and Stellar Astrophysics · Physics 2014-08-01 Wageesh Mishra , Nandita Srivastava , Jackie A. Davies

Understanding the evolution of radial sizes and instantaneous expansion speeds of coronal mass ejections (CMEs) is crucial for assessing their impact duration on Earth's environment. We introduce a non-conventional approach to derive the…

Solar and Stellar Astrophysics · Physics 2024-09-30 Anjali Agarwal , Wageesh Mishra

On 2020 April 19 a coronal mass ejection (CME) was detected in situ by Solar Orbiter at a heliocentric distance of about 0.8 AU. The CME was later observed in situ on April 20th by the Wind and BepiColombo spacecraft whilst BepiColombo was…

The Effective Acceleration Model (EAM) predicts the Time-of-Arrival (ToA) of the Coronal Mass Ejection (CME) driven shock and the average speed within the sheath at 1 AU. The model is based on the assumption that the ambient solar wind…