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Solar Coronal mass ejections (CMEs) are large-scale ejections of plasma and magnetic field from the corona, which propagate through interplanetary space. CMEs are the most significant drivers of adverse space weather on Earth, but the…

太阳与恒星天体物理 · 物理学 2012-10-22 Shane Maloney

Solar coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic field from the Sun into the corona and interplanetary space. They are the most significant drivers of adverse space weather at Earth and other locations in…

太阳与恒星天体物理 · 物理学 2012-02-20 Jason P. Byrne

Flares and CMEs can have deleterious effects on their surroundings: they can erode atmospheres of orbiting planets over time and also have high importance in stellar evolution. Most of the CME detections in the literature are single events…

From the Sun we know that coronal mass ejections (CMEs) are a transient phenomenon, often correlated with flares. They have an impact on solar mass- and angular momentum loss, and therefore solar evolution, and make a significant part of…

太阳与恒星天体物理 · 物理学 2022-05-25 Martin Leitzinger , Petra Odert , Petr Heinzel

Extreme ultraviolet (EUV) coronal dimmings are often observed in response to solar eruptive events. These phenomena can be generated via several different physical processes. For space weather, the most important of these is the temporary…

太阳与恒星天体物理 · 物理学 2016-10-12 James Paul Mason , Thomas N. Woods , David F. Webb , Barbara J. Thompson , Robin C. Colaninno , Angelos Vourlidas

Detections of stellar coronal mass ejections (CMEs) are still rare. Observations of strong Balmer line asymmetries during flare events have been interpreted as being caused by CMEs. Here, we aim to estimate the maximum possible Balmer line…

太阳与恒星天体物理 · 物理学 2020-05-11 P. Odert , M. Leitzinger , E. W. Guenther , P. Heinzel

Coronal mass ejections (CMEs) are solar eruptions of plasma and magnetic fields that significantly impact Space Weather, causing disruptions in technological systems and potential damage to power grids when directed towards Earth.…

太阳与恒星天体物理 · 物理学 2024-10-07 Shantanu Jain , Tatiana Podladchikova , Galina Chikunova , Karin Dissauer , Astrid M. Veronig

Coronal mass ejections (CMEs) were discovered in the early 1970s when space-borne coronagraphs revealed that eruptions of plasma are ejected from the Sun. Today, it is known that the Sun produces eruptive flares, filament eruptions, coronal…

太阳与恒星天体物理 · 物理学 2018-03-14 Lucie Green , Tibor Torok , Bojan Vrsnak , Ward Manchester , Astrid Veronig

We present here an overview of an important solar phenomenon with major implication for space weather and planetary life. The coronal mass ejections (CMEs) come from the Sun and expand in the heliosphere, becoming interplanetary coronal…

太阳与恒星天体物理 · 物理学 2014-06-13 Cristiana Dumitrache , Nedelia A. Popescu

Coronal mass ejections (CMEs) are large clouds of magnetized plasma ejected from the Sun, and are often associated with acceleration of electrons that can result in radio emission via various mechanisms. However, the underlying mechanism…

太阳与恒星天体物理 · 物理学 2022-05-25 Lei Lu , Li Feng , Weiqun Gan

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…

太阳与恒星天体物理 · 物理学 2019-01-30 Nat Gopalswamy

Coronal mass ejections (CMEs) originate from closed magnetic field regions on the Sun, which are active regions and quiescent filament regions. The energetic populations such as halo CMEs, CMEs associated with magnetic clouds, geoeffective…

太阳与恒星天体物理 · 物理学 2015-05-13 N. Gopalswamy , S. Akiyama , S. Yashiro , P. Makela

On the Sun, the energetic, erupting phenomena of flares and coronal mass ejections (CMEs) often occur together. While space-based photometry has revealed frequent white-light flares for vast numbers of stars, only a handful of coronal mass…

太阳与恒星天体物理 · 物理学 2024-07-17 K. Vida , B. Seli , R. M. Roettenbacher , A. Görgei , L. Kriskovics , Zs. Kővári , K. Oláh

Solar eruptive events, including solar flares and coronal mass ejections (CMEs), are typically characterised by energetically significant X-ray emissions from flare-accelerated electrons and hot thermal plasmas. Occulted events, where the…

太阳与恒星天体物理 · 物理学 2024-11-13 Laura A. Hayes , Säm Krucker , Hannah Collier , Daniel Ryan

We analyze the detection capability of Coronal Mass Ejections (CMEs) for all currently operating coronagraphs in space. We define as CMEs events that propagate beyond 10 solar radii with morphologies broadly consistent with a magnetic flux…

太阳与恒星天体物理 · 物理学 2020-08-11 Angelos Vourlidas , L. A. Balmaceda , H. Xie , O. C. St. Cyr

Solar eruptions generally refer to coronal mass ejections (CMEs) and flares. Both are important sources of space weather. Solar flares cause sudden change in the ionization level in the ionosphere. CMEs cause solar energetic particle (SEP)…

太阳与恒星天体物理 · 物理学 2017-09-12 Nat Gopalswamy

Coronal mass ejections (CMEs) are relatively a recently-discovered phenomenon, in 1971, some fifteen years into the Space Era. It took another two decades to realize that CMEs are the most important players in solar terrestrial relationship…

太阳与恒星天体物理 · 物理学 2016-03-08 Nat Gopalswamy

The Sun is an active star that can launch large eruptions of magnetised plasma into the heliosphere, called coronal mass ejections (CMEs). These ejections can drive shocks that accelerate particles to high energies, often resulting in radio…

Coronal mass ejections (CMEs) are large-scale expulsions of plasma and magnetic fields from the Sun into the heliosphere and are the most important driver of space weather. The geo-effectiveness of a CME is primarily determined by its…

太阳与恒星天体物理 · 物理学 2023-10-26 Devojyoti Kansabanik

In this contribution to the panel discussion of the IAU Symposium 388 "Solar and Stellar Coronal Mass Ejections", I concentrate on white-light observations of solar coronal mass ejections (CMEs) from space and specifically address the…

太阳与恒星天体物理 · 物理学 2024-07-12 Philippe Lamy