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This study covers a thorough statistical investigation of the evolution of interplanetary coronal mass ejections (ICMEs) with and without sheaths, through a broad heliocentric distance and temporal range. The analysis treats the sheath and…

Solar and Stellar Astrophysics · Physics 2024-05-08 C. Larrodera , M. Temmer

Motivated by the need to improve the ability to forecast whether a certain coronal mass ejection (CME) is to impact Earth, and by the insufficiency of statistical studies that analyze the whole erupting system with the focus on the…

Solar and Stellar Astrophysics · Physics 2020-10-21 M. V. Sieyra , M. Cécere , H. Cremades , F. A. Iglesias , A. Sahade , M. Mierla , G. Stenborg , A. Costa , M. West , E. D'Huys

We investigate the performance of six methods for predicting the CME time of arrival (ToA) and velocity at Earth using a sample of nine Earth-impacting CMEs between May 2010 and June 2011. The CMEs were tracked continuously from the Sun to…

Solar and Stellar Astrophysics · Physics 2013-11-01 R. C. Colaninno , A. Vourlidas , C. -C. Wu

Coronal mass ejections (CMEs) are large eruptions from the Sun that propagate through the heliosphere after launch. Observational studies of these transient phenomena are usually based on 2D images of the Sun, corona, and heliosphere…

Shocks driven by coronal mass ejections (CMEs) are primary drivers of gradual solar energetic particle (SEP) events, posing significant risks to space technology and astronauts. Concurrently, particles accelerated at these shocks may also…

The acceleration of protons and electrons to high (sometimes GeV/nucleon) energies by solar phenomena is a key component of space weather. These solar energetic particle (SEP) events can damage spacecraft and communications, as well as…

Solar coronal dimmings have been observed extensively in the past two decades. Due to their close association with coronal mass ejections (CMEs), there is a critical need to improve our understanding of the physical processes that cause…

Solar and Stellar Astrophysics · Physics 2022-04-13 Meng Jin , Mark C. M. Cheung , Marc L. DeRosa , Nariaki V. Nitta , Carolus J. Schrijver

Coronal mass ejections (CMEs) play a decisive role in driving space weather, especially, the fast ones (e.g., with speeds above $800$~km~s$^{-1}$). Understanding the trigger mechanisms of fast CMEs can help us gaining important information…

Solar and Stellar Astrophysics · Physics 2019-11-06 Peng Zou , Chaowei Jiang , Fengsi Wei , Pingbing Zuo , Yi Wang

Coronal mass ejections (CMEs) are large scale eruptions observed close to the Sun. They are travelling through the heliosphere and possibly interacting with the Earth environment creating interruptions or even damaging new technology…

Solar and Stellar Astrophysics · Physics 2022-07-08 C. Verbeke , B. Schmieder , P. Démoulin , S. Dasso , B. Grison , E. Samara , C. Scolini , S. Poedts

Coronal mass ejections (CMEs) are the main driver of Space Weather. Therefore, a precise forecasting of their likely geo-effectiveness relies on an accurate tracking of their morphological and kinematical evolution throughout the…

Solar and Stellar Astrophysics · Physics 2015-06-18 T. Nieves-Chinchilla , A. Vourlidas , G. Stenborg , N. P. Savani , A. Koval , A. Szabo , L. K. Jian

A Coronal Mass Ejection (CME) was detected crossing the radio signals transmitted by the Mars Express (MEX) and Tianwen-1 (TIW) spacecraft at a solar elongation of $4.4^{o}$. The impact of the CME was clearly identifiable in the spacecraft…

Solar and Stellar Astrophysics · Physics 2025-12-05 Jasper Edwards , Guifré Molera Calvés , John Morgan , Mark Cheung

Using a refined setup process, we simulated the propagation of six observed Coronal Mass Ejections (CMEs) with the 2012 Block-Adaptive-Tree-Solarwind-Roe-Upwind-Scheme (BATS-R-US) code from the Sun to the Earth or STEREO A and compared the…

Space Physics · Physics 2019-05-23 J. M. Schmidt , Iver H. Cairns

Coronal mass ejections (CMEs) are the largest-scale eruptive phenomena in the solar system. Associated with enormous plasma ejections and energy release, CMEs have an important impact on the solar-terrestrial environment. Accurate…

Solar and Stellar Astrophysics · Physics 2022-06-29 Zihao Yang , Hui Tian , Xianyong Bai , Yajie Chen , Yang Guo , Yingjie Zhu , Xin Cheng , Yuhang Gao , Yu Xu , Hechao Chen , Jiale Zhang

During the propagation of interplanetary coronal mass ejections (ICMEs), evolution of the ICME-driven shock along with interactions with other solar wind structures, planetary bodies, and general changes to their morphology can alter…

In this contribution to the panel discussion of the IAU Symposium 388 "Solar and Stellar Coronal Mass Ejections", I concentrate on white-light observations of solar coronal mass ejections (CMEs) from space and specifically address the…

Solar and Stellar Astrophysics · Physics 2024-07-12 Philippe Lamy

Stellar flares and coronal mass ejections (CMEs) can strip planetary atmospheres, reducing the potential habitability of terrestrial planets. While flares have been observed for decades, stellar CMEs remain elusive. Extreme ultraviolet…

Solar and Stellar Astrophysics · Physics 2025-07-30 James Paul Mason , Allison Youngblood , Kevin France , Astrid M. Veronig , Meng Jin

On 2022 March 10, a coronal mass ejection (CME) erupted from the Sun, resulting in Solar Orbiter observations at 0.45 au of both dispersive solar energetic particles arriving prior to the interplanetary CME (ICME) and locally accelerated…

The radial speed of a coronal mass ejection (CME) determines the shock-driving capability of a CME as indicated by the presence of a type II radio burst. Here we report on the April 18, 2014 CME that was associated with a type II radio…

Interplanetary coronal mass ejections (ICMEs) are major drivers of heliospheric variability and can produce prolonged disturbances near Earth. Understanding their thermodynamic evolution is crucial for assessing their heat budget and…

Solar and Stellar Astrophysics · Physics 2025-12-18 Soumyaranjan Khuntia , 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…

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