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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

Understanding and predicting the structure and evolution of coronal mass ejections (CMEs) in the heliosphere remains one of the most sought-after goals in heliophysics and space weather research. A powerful tool for improving current…

Our major aim is a height-time model $r(t)$ of the propagation of {\sl Coronal Mass Ejections (CMEs)}, where the lower corona is self-consistently connected to the heliospheric path. We accomplish this task by using the Neupert effect to…

Solar and Stellar Astrophysics · Physics 2021-12-16 Markus J. Aschwanden

We present a new approach to combine remote observations and in situ data by STEREO/HI and Wind, respectively, to derive the kinematics and propagation directions of interplanetary coronal mass ejections (ICMEs). We used two methods,…

Solar and Stellar Astrophysics · Physics 2012-02-07 T. Rollett , C. Möstl , M. Temmer , A. M. Veronig , C. J. Farrugia , H. K. Biernat

Coronal Mass Ejections (CMEs) are large-scale eruptions from the Sun into interplanetary space. Despite being major space weather drivers, our knowledge of the CME properties in the inner heliosphere remains constrained by the scarcity of…

Solar and Stellar Astrophysics · Physics 2021-05-12 Camilla Scolini , Sergio Dasso , Luciano Rodriguez , Andrei N. Zhukov , Stefaan Poedts

Measurements of the plasma parameters of coronal mass ejections (CMEs), particularly the magnetic field and nonthermal electron population entrained in the CME plasma, are crucial to understand their propagation, evolution, and…

Solar and Stellar Astrophysics · Physics 2023-06-22 Devojyoti Kansabanik , Surajit Mondal , Divya Oberoi

We report on a numerical investigation of two coronal mass ejections (CMEs) which interact as they propagate in the inner heliosphere. We focus on the effect of the orientation of the CMEs relative to each other by performing four different…

Space Physics · Physics 2015-06-17 N. Lugaz , C. J. Farrugia , W. B. Manchester , N. Schwadron

Coronal mass ejections (CMEs) are major drivers of geomagnetic storms, which may cause severe space weather effects. Automating the detection, tracking, and three-dimensional (3D) reconstruction of CMEs is important for operational…

Solar and Stellar Astrophysics · Physics 2024-06-06 Jiahui Shan , Huapeng Zhang , Lei Lu , Yan Zhang , Li Feng , Yunyi Ge , Jianchao Xue , Shuting Li

Solar energetic particle (SEP) events are associated with coronal mass ejections (CMEs) and/or solar flares. SEPs travel through the corona and interplanetary space to reach Earth, posing a radiation hazard to spacecraft and astronauts…

Solar and Stellar Astrophysics · Physics 2024-11-07 Lei Cheng , Ming Zhang , Ryun Young Kwon , David Lario

In this paper, we analyze 91 coronal mass ejection (CME) events studied by Manoharan et al. (2004) and Gopalswamy and Xie (2008). These earth-directed CMEs are large (width $>$160$^\circ$) and cover a wide range of speeds ($\sim$120--2400…

Solar and Stellar Astrophysics · Physics 2015-05-20 P. K. Manoharan , A. Mujiber Rahman

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…

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

The study of the acceleration of particles is an essential element of research in the heliospheric science. Here, we discuss the predisposition to the particle acceleration around coronal mass ejections (CMEs)-driven shocks with corrugated…

Solar and Stellar Astrophysics · Physics 2019-07-24 A. Páez , V. Jatenco-Pereira , D. Falceta-Gonçalves , M. Opher

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

The trajectories of coronal mass ejections (CMEs) are often seen to substantially deviate from a purely radial propagation direction. Such deviations occur predominantly in the corona and have been attributed to "channeling" or deflection…

The kinematic properties of coronal mass ejections (CMEs) suffer from the projection effects, and it is expected that the real velocity should be larger and the real angular width should be smaller than the apparent values. Several attempts…

Solar and Stellar Astrophysics · Physics 2015-05-20 Y. Wu , P. F. Chen

Geomagnetic storms are an important aspect of space weather and can result in significant impacts on space- and ground-based assets. The majority of strong storms are associated with the passage of interplanetary coronal mass ejections…

Solar coronal dimmings have been observed extensively in the past two decades and are believed to have close association with coronal mass ejections (CMEs). Recent study found that coronal dimming is the only signature that could…

To improve the forecasting capability of impactful solar energetic particle (SEP) events, the relation between coronal mass ejections (CMEs) and SEP events needs to be better understood. Here we present a statistical study of SEP…

Solar and Stellar Astrophysics · Physics 2020-09-09 Kosuke Kihara , Yuwei Huang , Nobuhiko Nishimura , Nariaki V. Nitta , Seiji Yashiro , Kiyoshi Ichimoto , Ayumi Asai

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