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Coronal mass ejections (CMEs) represent one type of the major eruption from the Sun. Their interplanetary counterparts, the interplanetary CMEs (ICMEs), are the direct manifestations of these structures when they propagate into the…

Solar and Stellar Astrophysics · Physics 2021-07-06 Qiang Hu , Wen He , Lingling Zhao , Edward Lu

The kinematics of coronal mass ejections (CMEs) are essential for understanding their initiation mechanisms and predicting their planetary impact. Most acceleration and deceleration occur below 4 R$\odot$, which is crucial for initiation…

Solar and Stellar Astrophysics · Physics 2023-08-24 Nitin Vashishtha , Satabdwa Majumdar , Ritesh Patel , Vaibhav Pant , Dipankar Banerjee

Understanding the thermal and turbulence properties of interplanetary coronal mass ejections (ICMEs) is essential for analyzing their evolution and interactions with the surrounding medium. This study explores these characteristics across…

Solar and Stellar Astrophysics · Physics 2025-05-27 Soumyaranjan Khuntia , Wageesh Mishra

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…

Aims. The study of the morphology of coronal mass ejections (CMEs) is an auspicious approach to understanding how magnetic fields are structured within CMEs. Although earlier studies have suggested an asymmetry in the width of CMEs in…

Solar and Stellar Astrophysics · Physics 2020-03-25 Hebe Cremades , Francisco A. Iglesias , Luciano A. Merenda

The familiar correlation between the speed and angular width of coronal mass ejections (CMEs) is also found in solar cycle 24, but the regression line has a larger slope: for a given CME speed, cycle 24 CMEs are significantly wider than…

Solar and Stellar Astrophysics · Physics 2014-08-18 Nat Gopalswamy , Sachiko Akiyama , Seiji Yashiro , Hong Xie , Pertti Mäkelä , Grzegorz Michalek

Context. Observations reveal that shocks can be driven by fast coronal mass ejections (CMEs) and play essential roles in particle accelerations. A critical ratio, $\delta$, derived from a shock standoff distance normalized by the radius of…

Solar and Stellar Astrophysics · Physics 2022-04-20 Beili Ying , Li Feng , Bernd Inhester , Marilena Mierla , Weiqun Gan , Lei Lu , Shuting Li

In situ measurements of interplanetary coronal mass ejection (ICME) composition, including elemental abundances and charge states of heavy ions, open a new avenue to study coronal mass ejections (CMEs) besides remote-sensing observations.…

Solar and Stellar Astrophysics · Physics 2020-11-03 Hongqiang Song , Shuo Yao

The primary objective of this study is to connect the coronal mass ejections (CMEs) to their source regions, primarily creating a CME source region (CSR) catalogue, and secondly probing into the influence the source regions have on…

Solar and Stellar Astrophysics · Physics 2023-10-27 Satabdwa Majumdar , Ritesh Patel , Vaibhav Pant , Dipankar Banerjee , Aarushi Rawat , Abhas Pradhan , Paritosh Singh

The Fixed-\Phi (F\Phi) and Harmonic Mean (HM) fitting methods are two methods to determine the average direction and velocity of coronal mass ejections (CMEs) from time-elongation tracks produced by Heliospheric Imagers (HIs), such as the…

Solar and Stellar Astrophysics · Physics 2012-04-18 N. Lugaz , P. Kintner

The arrival time prediction of Coronal mass ejections (CMEs) is an area of active research. Many methods with varying levels of complexity have been developed to predict CME arrival. However, the mean absolute error (MAE) of predictions…

The traditional cone models achieve great success in studying the geometrical and kinematic properties of halo coronal mass ejections (CMEs). In this paper, a revised cone model is proposed to investigate the properties of CMEs as a result…

Solar and Stellar Astrophysics · Physics 2021-09-08 Q. M. Zhang

Although coronal mass ejections (CMEs) resembling flux ropes generally expand self-similarly, deformations along their fronts have been reported in observations and simulations. We present evidence of one CME becoming deformed after a…

Solar and Stellar Astrophysics · Physics 2022-10-26 Carlos R. Braga , Angelos Vourlidas , Paulett C. Liewer , Phillip Hess , Guillermo Stenborg , Pete Riley

The understanding of the causes that produce the deflection of coronal mass ejections (CMEs) is essential for the space weather forecast. In this article, we study the effects on CMEs trajectories produced by the different properties of a…

Solar and Stellar Astrophysics · Physics 2020-06-15 Abril Sahade , Mariana Cécere , Gustavo Krause

Predicting the magnetic field within an Earth-directed coronal mass ejection (CME) well before its arrival at Earth is one of the most important issues in space weather research. In this article, we compare the intrinsic flux rope type,…

Coronal mass ejections (CMEs) are solar eruptions into interplanetary space of as much as a few billion tons of plasma, with embedded magnetic fields from the Sun's corona. These perturbations play a very important role in…

Astrophysics · Physics 2009-11-13 L. Hernandez-Cervantes , A. Santillan , A. R. Gonzalez-Ponce

In this work we performed a polarimetric study of a fast and wide coronal mass ejection (CME) observed on 12 July 2012 by the COR1 and COR2 instruments onboard Solar TErrestrial RElations Observatory (STEREO) mission. The CME source region…

Solar and Stellar Astrophysics · Physics 2022-07-20 Marilena Mierla , Bernd Inhester , Andrei N. Zhukov , Sergei V. Shestov , Alessandro Bemporad , Philippe Lamy , Serge Koutchmy

Coronal mass ejections (CMEs) are large-scale expulsions of plasma and magnetic flux from the Sun's corona into the heliosphere. In interplanetary space they are referred to as interplanetary CMEs (ICMEs), often characterised by a shock, a…

Solar and Stellar Astrophysics · Physics 2026-04-03 Akanksha Dagore , Giuseppe Prete , Vincenzo Capparelli , Vincenzo Carbone , Fabio Lepreti

The different appearances exhibited by coronal mass ejections (CMEs) are believed to be in part the result of different orientations of their main axis of symmetry, consistent with a flux-rope configuration. There are observational reports…

Solar and Stellar Astrophysics · Physics 2016-07-26 I. Cabello , H. Cremades , L. Balmaceda , I. Dohmen

Most earlier studies have been limited to estimating the kinematic evolution of coronal mass ejections (CMEs), and only limited efforts have been made to investigate their thermodynamic evolution. We focus on the interplay of the thermal…

Solar and Stellar Astrophysics · Physics 2024-11-07 Soumyaranjan Khuntia , Wageesh Mishra , Yuming Wang , Sudheer K Mishra , Teresa Nieves-Chinchilla , Shaoyu Lyu