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Coronal mass ejections (CMEs) are powered by magnetic energy stored in electric currents in coronal magnetic fields, with the pre-CME field in balance between outward magnetic pressure of the proto-ejecta and inward magnetic tension from…

太阳与恒星天体物理 · 物理学 2012-11-21 J. Suzuki , B. T. Welsch , Y. Li

Stellar coronal mass ejections (CMEs) from host stars are an important factor that affects the habitability of exoplanets. Although their solar counterparts have been well observed for decades, it is still very difficult to find solid…

太阳与恒星天体物理 · 物理学 2024-02-20 Zihao Yang , Hui Tian , Yingjie Zhu , Yu Xu , Linyi Chen , Zheng Sun

Using data from the Heliospheric Imagers (HIs) onboard STEREO, it is possible to derive the direction of propagation of coronal mass ejections (CMEs) in addition to their speed with a variety of methods. For CMEs observed by both STEREO…

太阳与恒星天体物理 · 物理学 2011-06-28 N. Lugaz

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…

太阳与恒星天体物理 · 物理学 2023-10-11 Soumyaranjan Khuntia , Wageesh Mishra , Sudheer K Mishra , Yuming Wang , Jie Zhang , Shaoyu Lyu

There is a growing interest in searching for coronal mass ejections (CMEs) in other stellar systems because they are thought to be one of the important factors shaping planetary atmospheres. We investigated the possible spectral signatures…

太阳与恒星天体物理 · 物理学 2025-04-08 Yu Xu , Hui Tian , Julián D. Alvarado-Gómez , Jeremy J. Drake , Gustavo Guerrero

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…

天体物理学 · 物理学 2009-11-13 L. Hernandez-Cervantes , A. Santillan , A. R. Gonzalez-Ponce

Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with comprehensive in situ and remote sensing observa- tions of a CME…

This study entails the fourth part of a global flare energetics project, in which the mass $m_{\mathrm{cme}}$, kinetic energy $E_{\mathrm{kin}}$, and the gravitational potential energy $E_{\mathrm{grav}}$ of coronal mass ejections (CMEs) is…

太阳与恒星天体物理 · 物理学 2016-11-09 Markus J. Aschwanden

We report on the first comprehensive study of the coronal mass ejections (CMEs) associated with $\sim$25 MeV solar energetic proton (SEP) events in 1980-2013 observed in the low/inner corona by the Mauna Loa Solar Observatory (MLSO) Mk3 and…

太阳与恒星天体物理 · 物理学 2023-08-28 I. G. Richardson , O. C. St Cyr , J. T. Burkepile , H. Xie , B. J. Thompson

We investigate the source eruption, propagation and expansion characteristics, and heliospheric impacts of the 2020 November 29 coronal mass ejection (CME) and associated shock, using remote sensing and in situ observations from multiple…

太阳与恒星天体物理 · 物理学 2022-10-05 Chong Chen , Ying D. Liu , Bei Zhu

We have performed, for the first time, the successful automated detection of Coronal Mass Ejections (CMEs) in data from the inner heliospheric imager (HI-1) cameras on the STEREO A spacecraft. Detection of CMEs is done in time-height maps…

太阳与恒星天体物理 · 物理学 2016-12-14 V. Pant , S. Willems , L. Rodriguez , M. Mierla , D. Banerjee , J. A. Davies

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…

太阳与恒星天体物理 · 物理学 2011-02-11 A. R. Yeates , D. H. Mackay

Coronal mass ejections (CMEs) are known drivers of large-scale waves in the low corona. However, wave dynamics in the extended corona and inner heliosphere remain largely unexplored. Here, we report the first observational and numerical…

Context: Metric type II bursts are the most direct diagnostic of shock waves in the solar corona. Aims: There are two main competing views about the origin of coronal shocks: that they originate in either blast waves ignited by the pressure…

太阳与恒星天体物理 · 物理学 2015-05-28 A. Nindos , C. E. Alissandrakis , A. Hillaris , P. Preka-Papadema

We report observations of homologous coronal jets and their coronal mass ejections (CMEs) observed by instruments onboard the Solar Dynamics Observatory (SDO) and Solar and Heliospheric Observatory (SOHO) spacecraft. The homologous jets…

太阳与恒星天体物理 · 物理学 2016-05-25 Navdeep K. Panesar , Alphonse C. Sterling , Ronald L. Moore

Accurate estimation of propagation characteristics of coronal mass ejections (CMEs) is crucial for predicting their geoeffectiveness. Stereoscopic techniques to study the kinematics of CMEs generally have been carried out using remote…

太阳与恒星天体物理 · 物理学 2026-02-19 Sandeep Kumar , Nandita Srivastava , Parthib Banerjee , Nat Gopalswamy

The availability of high quality synoptic observations of the EUV and visible corona during the SOHO mission has advanced our understanding of the low corona manifestations of CMEs. The EUV imager/white light coronagraph connection has been…

太阳与恒星天体物理 · 物理学 2009-08-11 Eva Robbrecht , Spiros Patsourakos , Angelos Vourlidas

Coronal mass ejections (CMEs) are the most dynamic phenomena in our solar system. They abruptly disrupt the continuous outflow of solar wind by expelling huge clouds of magnetized plasma into interplanetary space with velocities enabling to…

太阳与恒星天体物理 · 物理学 2016-12-07 Manuela Temmer

Coronal mass ejections (CMEs) are massive solar eruptions, which have a significant impact on Earth. In this paper, we propose a new method, called DeepCME, to estimate two properties of CMEs, namely, CME mass and kinetic energy. Being able…

太阳与恒星天体物理 · 物理学 2023-12-05 Khalid A. Alobaid , Yasser Abduallah , Jason T. L. Wang , Haimin Wang , Shen Fan , Jialiang Li , Huseyin Cavus , Vasyl Yurchyshyn