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We investigate the deflection and rotation behavior of 49 Earth-directed coronal mass ejections (CMEs) spanning the period from 2010 to 2020 aiming to understand the potential influence of coronal holes (CHs) on their trajectories. We…

Solar and Stellar Astrophysics · Physics 2026-04-30 Suresh Karuppiah , Mateja Dumbović , Karmen Martinić , Manuela Temmer , Stephan G. Heinemann , Bojan Vršnak

The issue of the influence of coronal holes (CHs) on coronal mass ejections (CMEs) in causing solar energetic particle (SEP) events is revisited. It is a continuation and extension of our previous work (Shen et al., 2006), in which no…

Solar and Stellar Astrophysics · Physics 2015-05-19 Chenglong Shen , Jia Yao , Yuming Wang , Pinzhong Ye , X. P. Zhao , S. Wang

We have used the Krall flux-rope model (Krall and St. Cyr, Astrophys. J. 2006, 657, 1740) (KFR) to fit 23 magnetic cloud (MC)-CMEs and 30 non-cloud ejecta (EJ)-CMEs in the Living With a Star (LWS) Coordinated Data Analysis Workshop (CDAW)…

Solar and Stellar Astrophysics · Physics 2015-06-12 H. Xie , N. Gopalswamy , O. C. St. Cyr

Many observations show that coronal holes (CHs) deviate coronal mass ejections (CMEs) away from them. However, there are some peculiar events reported where the opposite occurs. To contribute to a space weather forecast efforts, in relation…

Solar and Stellar Astrophysics · Physics 2021-08-25 Abril Sahade , Mariana Cécere , Andrea Costa , Hebe Cremades

We have studied three Interplanetary Coronal Mass Ejections (ICMEs) having clear signatures of magnetic cloud (MC) arrival at 1 AU and their associated solar sources during 2011 to 2013. Comparing the axial magnetic field strength (B0) of…

Solar and Stellar Astrophysics · Physics 2019-01-30 Ranadeep Sarkar , Nandita Srivastava

Interplanetary coronal mass ejections (ICMEs) often consist of a shock wave, sheath region, and ejecta region. The ejecta regions are divided into two broad classes: magnetic clouds (MC) that exhibit the characteristics of magnetic flux…

Solar and Stellar Astrophysics · Physics 2020-09-30 Hongqiang Song , Jie Zhang , Xin Cheng , Gang Li , Qiang Hu , Leping Li , Shujun Chen , Ruisheng Zheng , Yao Chen

Coronal mass ejections (CMEs) are complex magnetized plasma structures in which the magnetic field spirals around a central axis, forming what is known as a flux rope (FR). The central FR axis can be oriented at any angle to the ecliptic.…

Solar and Stellar Astrophysics · Physics 2024-08-28 Karmen Martinić , Eleanna Asvestari , Mateja Dumbović , Tobias Rindlisbacher , Manuela Temmer , Bojan Vršnak

The relative importance of different initiation mechanisms for coronal mass ejections (CMEs) on the Sun is uncertain. One possible mechanism is the loss of equilibrium of coronal magnetic flux ropes formed gradually by large-scale surface…

Solar and Stellar Astrophysics · Physics 2014-11-20 A. R. Yeates , G. D. R. Attrill , Dibyendu Nandy , D. H. Mackay , P. C. H. Martens , A. A. van Ballegooijen

Understanding the properties, especially the magnetohydrodynamic (MHD) invariants, of coronal mass ejections (CMEs) measured in-situ is key to bridging the CME properties from the Sun to interplanetary space. In order to investigate CMEs…

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

Coronal mass ejections (CMEs) observed near the Sun via LASCO coronographic imaging are the most important solar drivers of geomagnetic storms. ICMEs, their interplanetary, near-Earth counterparts, can be detected in-situ, for example, by…

Astrophysics · Physics 2008-11-26 V. Yurchyshyn , Q. Hu , R. P. Lepping , B. J. Lynch , J. Krall

We report on a study comparing coronal flux ropes inferred from eruption data with their interplanetary counterparts constructed from in situ data. The eruption data include the source-region magnetic field, post-eruption arcades, and…

Solar and Stellar Astrophysics · Physics 2018-12-05 N. Gopalswamy , S. Akiyama , S. Yashiro , H. Xie

Coronal mass ejections (CMEs) are intense solar explosive eruptions. CMEs are highly important players in solar-terrestrial relationships, and they have important consequences for major geomagnetic storms and energetic particle events. It…

Space Physics · Physics 2019-02-20 Hengqiang Feng , Yan Zhao , Guoqing Zhao , Qiang Liu , Dejin Wu

Coronal mass ejections (CMEs) stand as intense eruptions of magnetized plasma from the Sun, playing a pivotal role in driving significant changes of the heliospheric environment. Deducing the properties of CMEs from their progenitors in…

Solar and Stellar Astrophysics · Physics 2024-07-15 J. H. Guo , L. Linan , S. Poedts , Y. Guo , B. Schmieder , A. Lani , Y. W. Ni , M. Brchnelova , B. Perri , T. Baratashvili , S. T. Li , P. F. Chen

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

Loss of equilibrium of magnetic flux ropes is a leading candidate for the origin of solar coronal mass ejections (CMEs). The aim of this paper is to explore to what extent this mechanism can account for the initiation of CMEs in the global…

Solar and Stellar Astrophysics · Physics 2011-02-11 A. R. Yeates , D. H. Mackay

Coronal Mass Ejections (CMEs) are energetic storms in the Sun that result in the ejection of large-scale magnetic clouds (MCs) in interplanetary space that contain enhanced magnetic fields with coherently changing field direction. The…

Solar and Stellar Astrophysics · Physics 2022-11-09 Sanchita Pal , Dibyendu Nandy , Emilia K J Kilpua

With the global view and high-cadence observations from SDO/AIA and STEREO, many spatially separated solar eruptive events appear to be coupled. However, the mechanisms for "sympathetic" events are still largely unknown. In this study, we…

Solar and Stellar Astrophysics · Physics 2016-03-17 M. Jin , C. J. Schrijver , M. C. M. Cheung , M. L. DeRosa , N. V. Nitta , A. M. Title

We identify coronal mass ejections (CMEs) associated with magnetic clouds (MCs) observed near Earth by the Wind spacecraft from 2008 to mid-2012, a time period when the two STEREO spacecraft were well positioned to study Earth-directed…

We intend to provide a comprehensive answer to the question on whether all Coronal Mass Ejections (CMEs) have flux rope structure. To achieve this, we present a synthesis of the LASCO CME observations over the last sixteen years, assisted…

Solar and Stellar Astrophysics · Physics 2015-06-05 Angelos Vourlidas , Ben J. Lynch , Russ A. Howard , Yan Li
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