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Recent Solar Dynamic Observatory observations reveal that coronal mass ejections (CMEs) consist of a multi-temperature structure: a hot flux rope and a cool leading front (LF). The flux rope first appears as a twisted hot channel in the…

Solar and Stellar Astrophysics · Physics 2015-06-12 X. Cheng , J. Zhang , D. M. Ding , Y. Liu , W. Poomvises

In this article, we present the multi-viewpoint and multi-wavelength analysis of an atypical solar jet based on the data from Solar Dynamics Observatory, SOlar, and Heliospheric Observatory, and Solar TErrestrial RElations Observatory. It…

Solar and Stellar Astrophysics · Physics 2020-10-07 Reetika Joshi , Yuming Wang , Ramesh Chandra , Quanhao Zhang , Lijuan Liu , Xiaolei Li

We present an analysis of {\it in situ} and remote-sensing measurements of a coronal mass ejection (CME) that erupted on 2021 February 20 and impacted both the Solar TErrestrial RElations Observatory (STEREO)-A and the {\it Wind}…

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…

The solar wind drag-based model is a widely used framework for predicting the propagation of Coronal Mass Ejections (CMEs) through interplanetary space. This model primarily considers the aerodynamic drag exerted by the solar wind on CMEs.…

Solar and Stellar Astrophysics · Physics 2025-02-19 Mattia Rossi , Sabrina Guastavino , Michele Piana , Anna Maria Massone

Solar flares and coronal mass ejections (CMEs), the most catastrophic eruptions in our solar system, have been known to affect terrestrial environments and infrastructure. However, because their triggering mechanism is still not…

Solar and Stellar Astrophysics · Physics 2015-06-11 K. Kusano , Y. Bamba , T. T. Yamamoto , Y. Iida , S. Toriumi , A. Asai

Magnetism defines the complex and dynamic solar corona. Coronal mass ejections (CMEs) are thought to be caused by stresses, twists, and tangles in coronal magnetic fields that build up energy and ultimately erupt, hurling plasma into…

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

In order to have a comprehensive view of the propagation and evolution of coronal mass ejections (CMEs) from the Sun to deep interplanetary space beyond 1 au, we carry out a kinematic analysis of 7 CMEs in solar cycle 23. The events are…

Solar and Stellar Astrophysics · Physics 2019-09-25 Xiaowei Zhao , Ying D. Liu , Huidong Hu , Rui Wang

Solar coronal mass ejections (CMEs) are the most significant drivers of adverse space weather at Earth, but the physics governing their propagation through the heliosphere is not well understood. While stereoscopic imaging of CMEs with the…

Solar and Stellar Astrophysics · Physics 2010-11-15 Jason P. Byrne , Shane A. Maloney , R. T. James McAteer , Jose M. Refojo , Peter T. Gallagher

Stellar eruptive events, such as flares and coronal mass ejections (CMEs), can affect planetary habitability by disturbing the stability of their atmospheres. For instance, strong stellar flares and CMEs can trigger atmospheric escape and,…

Solar and Stellar Astrophysics · Physics 2025-10-03 Nuri Park , Evgenya L. Shkolnik , Joe Llama

On February 12, 2021 two subsequent eruptions occurred above the West limb, as seen along the Sun-Earth line. The first event was a typical slow Coronal Mass Ejection (CME), followed $\sim 7$ hours later by a smaller and collimated…

The Sun and other solar-type stars have magnetic fields that permeate their interior and surface, extends through the interplanetary medium, and is the main driver of stellar activity. Stellar magnetic activity affects physical processes…

Solar and Stellar Astrophysics · Physics 2023-05-15 Fabian Menezes , Adriana Valio , Yuri Netto , Alexandre Araújo , Christina Kay , Merav Opher

Recent discoveries have revealed exoplanets orbiting young Sun-like stars, offering a window into the early solar system. These young stars frequently produce extreme magnetic explosions known as superflares, roughly once a day, potentially…

Solar and Stellar Astrophysics · Physics 2025-10-28 Kosuke Namekata

Coronal Mass Ejections (CMEs) are the most energetic expulsions of magnetized plasma from the Sun that play a crucial role in space weather dynamics. This study investigates the diverse kinematics and thermodynamic evolution of two CMEs…

Solar and Stellar Astrophysics · Physics 2023-10-11 Soumyaranjan Khuntia , Wageesh Mishra , Sudheer K Mishra , Yuming Wang , Jie Zhang , Shaoyu Lyu

During solar minimum, the Sun is relatively inactive with few sunspots observed on the solar surface. Consequently, we observe a smaller number of highly energetic events such as solar flares or coronal mass ejections (CMEs), which are…

Solar and Stellar Astrophysics · Physics 2021-07-06 P. Bhowmik , A. R. Yeates

Aims.We aim to locate the origin of a stealth coronal mass ejection (CME) detected in situ by the MAG instrument on board Solar Orbiter, and make connections between the CME observed at the Sun, and the interplanetary CME (ICME) measured in…

Solar Energetic Particles (SEP) are an integral part of the physical processes related with Space Weather. We present a review for the acceleration mechanisms related to the explosive phenomena (flares and/or CMEs) inside the solar corona.…

High Energy Astrophysical Phenomena · Physics 2019-06-12 Loukas Vlahos , Anastasios Anastasiadis , Athanasios Papaioannou , Athanasios Kouloumvakos , Heinz Isliker

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

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…