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We numerically model the coronal mass ejection (CME) event of October 28, 2003 that erupted from active region 10486 and propagated to Earth in less than 20 hours causing severe geomagnetic storms. The magnetohydrodynamic (MHD) model is…

Coronal Mass Ejections (CMEs) may have major importance for planetary and stellar evolution. Stellar CME parameters, such as mass and velocity, have yet not been determined statistically. So far only a handful of stellar CMEs has been…

Solar and Stellar Astrophysics · Physics 2020-02-26 M. Leitzinger , P. Odert , R. Greimel , K. Vida , L. Kriskovics , E. W. Guenther , H. Korhonen , F. Koller , A. Hanslmeier , Zs. Kővári , H. Lammer

We investigate the Sun-Earth dynamics of a set of 38 well-observed Coronal Mass Ejections(CMEs) using data from the STEREO, SOHO missions and WIND instrument. We seek to quantify the relative contributions of Lorentz force and aerodynamic…

Solar and Stellar Astrophysics · Physics 2019-07-31 Nishtha Sachdeva

This is the second paper of the statistical study of coronal mass ejection (CME) source locations, in which the relationship between CMEs and active regions (ARs) is statistically studied on the basis of the information of CME source…

Solar and Stellar Astrophysics · Physics 2012-01-04 Caixia Chen , Yuming Wang , Chenglong Shen , Pinzhong Ye , Jie Zhang , S. Wang

The spatial inhomogeneity of the distribution of coronal mass ejection (CME) occurrences in the solar atmosphere could provide a tool to estimate the longitudinal position of the most probable CME-capable active regions in the Sun. The…

Solar and Stellar Astrophysics · Physics 2017-03-30 N. Gyenge , T. Singh , T. S. Kiss , A. K. Srivastava , R. Erdélyi

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

The successive coronal mass ejections (CMEs) from 2010 July 30 - August 1 present us the first opportunity to study CME-CME interactions with unprecedented heliospheric imaging and in situ observations from multiple vantage points. We…

Recently it has been suggested that the "twin-CME" scenario Li.etal2012 may be a very effective mechanism in causing extreme Solar Energetic Particle (SEP) events and in particular Ground Level Enhancement (GLE) events. Ding.etal2013…

Solar and Stellar Astrophysics · Physics 2016-04-21 Liu-Guan Ding , Gang Li , Li-Hua Dong , Yong Jiang , Yi Jian , Bin Gu

Coronal mass ejections (CMEs) are tightly related to filament eruptions and usually are their continuation in the upper solar corona. It is common practice to divide all observed CMEs into fast and slow ones. Fast CMEs usually follow…

Solar and Stellar Astrophysics · Physics 2019-06-19 B. Filippov

We carried out white-light observations of the total solar eclipse on 13 November 2012 at two sites, where the totality occurred 35 minutes apart. We caught an ongoing coronal mass ejection (CME) and a pre-CME loop structure just before the…

Solar and Stellar Astrophysics · Physics 2020-07-29 Yoichiro Hanaoka , Jun Nakazawa , Osamu Ohgoe , Yoshiaki Sakai , Kazuo Shiota

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

We seek to quantify the relative contributions of Lorentz forces and aerodynamic drag on the propagation of solar coronal mass ejections (CMEs). We use Graduated Cylindrical Shell (GCS) model fits to a representative set of 38 CMEs observed…

Solar and Stellar Astrophysics · Physics 2017-07-11 Nishtha Sachdeva , Prasad Subramanian , Angelos Vourlidas , Volker Bothmer

Aims. The space radiation environment conditions and the maximum expected coronal mass ejection (CME) speed are being assessed through the investigation of scaling laws between the peak proton flux and fluence of Solar Energetic Particle…

Solar and Stellar Astrophysics · Physics 2024-10-02 Athanasios Papaioannou , Konstantin Herbst , Tobias Ramm , David Lario , Astrid M. Veronig

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

In recent years, ensemble modeling has been widely employed in space weather to estimate uncertainties in forecasts. We here focus on the ensemble modeling of CME arrival times and arrival velocities using a drag-based model, which is…

Visible-light observations of Coronal Mass Ejections (CMEs) performed with coronagraphs and heliospheric imagers (in primis on board the SOHO and STEREO missions) have offered so far the best way to study the kinematics and geometrical…

Solar and Stellar Astrophysics · Physics 2016-10-19 R. Susino , A. Bemporad

We present the multi-point and multi-wavelength observation and analysis on a solar coronal jet and coronal mass ejection (CME) event in this paper. Employing the GCS model, we obtained the real (three-dimensional) heliocentric distance and…

Solar and Stellar Astrophysics · Physics 2015-11-20 Jiajia Liu , Yuming Wang , Chenglong Shen , Kai Liu , Zonghao Pan , S. Wang

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 investigate the coronal and interplanetary evolution of a coronal mass ejection (CME) launched on 2010 September 4 from a source region linking two active regions (ARs) 11101 and 11103, using extreme ultraviolet imaging, magnetogram,…

Solar and Stellar Astrophysics · Physics 2017-05-24 Huidong Hu , Ying D. Liu , Rui Wang , Xiaowei Zhao , Bei Zhu , Zhongwei Yang

Context. Stellar coronal mass ejections (CMEs) are the primary driver of the exoplanetary space weather and they could affect the habitability of exoplanets. However, detections of possible stellar CME signatures are extremely rare. Aims.…

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