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Related papers: Effects of Coronal Mass Ejections on Distant Coron…

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Solar filament eruptions play a crucial role in triggering coronal mass ejections (CMEs). More than 80 % of eruptions lead to a CME. This correlation has been studied extensively during the past solar cycles and the last long solar minimum.…

Solar and Stellar Astrophysics · Physics 2015-06-12 B. Schmieder , P. Demoulin , G. Aulanier

Widespread solar energetic particle (SEP) events remain poorly understood phenomena in space weather. These events are often linked to coronal mass ejections (CMEs) and their shocks, but the mechanisms governing their global particle…

Space Physics · Physics 2025-07-02 N. Wijsen , I. C. Jebaraj , N. Dresing , A. Kouloumvakos , E. Palmerio , L. Rodríguez-García

This paper updates the influence of environmental and source factors of shocks driven by coronal mass ejections (CMEs) that are likely to influence the solar energetic particle (SEP) events. The intensity variation due to CME interaction…

Solar and Stellar Astrophysics · Physics 2015-05-30 Nat Gopalswamy

The diffuse morphology and transient nature of coronal mass ejections (CMEs) make them difficult to identify and track using traditional image processing techniques. We apply multiscale methods to enhance the visibility of the faint CME…

Solar and Stellar Astrophysics · Physics 2009-02-20 Jason P. Byrne , Peter T. Gallagher , R. T. James McAteer , C. Alex Young

Propagation of coronal mass ejections (CMEs) from the Sun far into interplanetary space is not well understood due to limited observations. In this study we examine the propagation characteristics of two geo-effective CMEs, which occurred…

Solar and Stellar Astrophysics · Physics 2017-03-08 Xiaowei Zhao , Ying D. Liu , Huidong Hu , Rui Wang

Coronal dimming of extreme ultraviolet (EUV) emission has the potential to be a useful forecaster of coronal mass ejections (CMEs). As emitting material leaves the corona, a temporary void is left behind which can be observed in spectral…

Solar and Stellar Astrophysics · Physics 2014-06-25 J. P. Mason , T. N. Woods , A. Caspi , B. J. Thompson , R. A. Hock

We investigate the propagation of the 2015 June 21 CME-driven shock as revealed by the type II bursts at metric and longer wavelengths and coronagraph observations. The CME was associated with the second largest geomagnetic storm of solar…

Solar and Stellar Astrophysics · Physics 2018-08-29 N. Gopalswamy , P. Makela , S. Akiyama , S. Yashiro , H. Xie , N. Thakur

We examine the energetics of Coronal Mass Ejections (CMEs) with data from the LASCO coronagraphs on SOHO. The LASCO observations provide fairly direct measurements of the mass, velocity and dimensions of CMEs. Using these basic…

Astrophysics · Physics 2007-05-23 Angelos Vourlidas , Prasad Subramanian , K. P. Dere , R. A. Howard

Coronal mass ejections (CMEs) on stars can change the stars' magnetic field configurations and mass loss rates during the eruption and propagation and therefore, may affect the stars' rotation properties on long time-scales. The dynamics of…

Solar and Stellar Astrophysics · Physics 2024-06-13 Yu Xu , Julián D. Alvarado-Gómez , Hui Tian , Katja Poppenhäger , Gustavo Guerrero , Xianyu Liu

We present the results of the observations of a coronal mass ejection (CME), which occurred on May 13, 2009. The most important feature of these observations is that the CME was observed from the very early stage (the solar surface) up to a…

Solar and Stellar Astrophysics · Physics 2015-09-28 Anton Reva , Artem Ulyanov , Sergey Bogachev , Sergey Kuzin

A fast and wide Coronal Mass Ejection (CME) erupted from the Sun on 2012-03-13. Its interplanetary counterpart was detected in situ two days later by STEREO-A and near-Earth spacecraft. We suggest that at 1 au the CME extended at least…

Forecasting the geomagnetic effects of solar storms, known as coronal mass ejections (CMEs), is currently severely limited by our inability to predict the magnetic field configuration in the CME magnetic core and by observational effects of…

The magnetic orientation of coronal mass ejections (CMEs) is of great importance to understand their space weather effects. Although many evidences suggest that CMEs can undergo significant rotation during the early phases of evolution in…

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…

Context. In the scope of space weather forecasting, it is crucial to be able to more reliably predict the arrival time, speed, and magnetic field configuration of coronal mass ejections (CMEs). From the time a CME is launched, the dominant…

Solar and Stellar Astrophysics · Physics 2023-09-28 K. Martinic , M. Dumbovic , J. Calogovic , B. Vrsnak , N. Al-Haddad , M. Temmer

In 2010 May 23-24, SDO observed the launch of two successive coronal mass ejections (CMEs), which were subsequently tracked by the SECCHI suite onboard STEREO. Using the COR2 coronagraphs and the heliospheric imagers (HIs), the initial…

Space Physics · Physics 2015-06-11 N. Lugaz , C. J. Farrugia , J. A. Davies , C. Möstl , C. J. Davis , I. I. Roussev , M. Temmer

Coronal mass ejections (CMEs) have become one of the key indicators of solar activity, especially in terms of the consequences of the transient events in the heliosphere. Although CMEs are closely related to the sunspot number (SSN), they…

Solar and Stellar Astrophysics · Physics 2019-01-30 Nat Gopalswamy

We present a novel method to evaluate the Alfven speed and the magnetic field strength along the streamer plasma sheet in the outer corona. The method is based on recent observations of streamer waves, which are regarded as the fast kink…

Solar and Stellar Astrophysics · Physics 2015-05-20 Y. Chen , S. W. Feng , B. Li , H. Q. Song , L. D. Xia , X. L. Kong , Xing Li

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

Coronal Mass Ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties. This is because CMEs interact with the ambient solar wind and other large-scale magnetic field structures. In this work, we…

Solar and Stellar Astrophysics · Physics 2023-10-09 Sandeep Kumar , Dinesha V. Hegde , Nandita Srivastava , Nikolai V. Pogorelov , Nat Gopalswamy , Seiji Yashiro