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相关论文: Automated Detection of Solar Eruptions

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The Solar TErrestrial RElations Observatory (STEREO) and its heliospheric imagers (HI) have provided us the possibility to enhance our understanding of the interplanetary propagation of coronal mass ejections (CMEs). HI-based methods are…

太阳与恒星天体物理 · 物理学 2018-11-14 T. Amerstorfer , C. Möstl , P. Hess , M. Temmer , M. L. Mays , M. Reiss , P. Lowrance , Ph. -A. Bourdin

As the most energetic eruptions in the solar system, coronal mass ejections (CMEs) can produce shock waves at both their front and flanks as they erupt from the Sun into the heliosphere. However, the amount of energy produced in these…

太阳与恒星天体物理 · 物理学 2015-06-23 David M. Long , Deborah Baker , David R. Williams , Eoin P. Carley , Peter T. Gallagher , Pietro Zucca

Coronal mass ejections (CMEs) are explosive events that occur basically daily on the Sun. It is thought that these events play a crucial role in the angular momentum and mass loss of late-type stars, and also shape the environment in which…

太阳与恒星天体物理 · 物理学 2017-09-20 Heidi Korhonen , Krisztian Vida , Martin Leitzinger , Petra Odert , Orsolya Eszter Kovacs

The spectra of coronal mass ejections (CMEs) in the low corona play a crucial role in understanding their origins and physical mechanism, and enhancing space weather forecasting. However, capturing these spectra faces significant…

太阳与恒星天体物理 · 物理学 2025-04-01 Lami Chan , Xianyong Bai , Hui Tian , Yufei Feng , Yu Xu , Tibor Török , Yuhang Gao , Tanmoy Samanta , Zheng Sun

Coronal Mass Ejections (CMEs) are highly dynamic events originating in the solar atmosphere, that show a wide range of kinematic properties and are the major drivers of the space weather. The angular width of the CMEs is a crucial parameter…

太阳与恒星天体物理 · 物理学 2021-04-28 V. Pant , R. Majumdar , R. Patel , A. Chauhan , D. Banerjee , N. Gopalswamy

As solar coronal mass ejections (CMEs) propagate through the heliosphere, they expend energy in heating protons to compensate for the cooling that occurs due to expansion. CME propagation models usually treat energy dissipation implicitly…

太阳与恒星天体物理 · 物理学 2025-05-20 Debesh Bhattacharjee , Prasad Subramanian , Saikat majumder , Wageesh Mishra

Coronal mass ejections (CMEs) can exhibit non-radial evolution. The background magnetic field is considered the main driver for the trajectory deviation relative to the source region. The influence of the magnetic environment has been…

太阳与恒星天体物理 · 物理学 2024-12-30 A. Sahade , A. Vourlidas , C. Mac Cormack

Intense solar energetic particle (SEP) events data, associated with ground level enhancements (GLEs), occurred during 1989 to 2006 have been obtained from the spectrometers on board GOES spacecraft in the energy range 10-100 MeV. The…

太阳与恒星天体物理 · 物理学 2017-08-02 P. K. Manoharan , G. Agalya

We investigate the Sun-Earth dynamics of a set of eight well observed solar coronal mass ejections (CMEs) using data from the STEREO spacecraft. We seek to quantify the extent to which momentum coupling between these CMEs and the ambient…

太阳与恒星天体物理 · 物理学 2015-08-24 Nishtha Sachdeva , Prasad Subramanian , Robin Colaninno , Angelos Vourlidas

This paper investigates the onset time of Solar Energetic Particle (SEP) events with numerical simulations, and analyses the accuracy of the Velocity Dispersion Analysis (VDA) method. Using a 3-dimensional focused transport model, we…

太阳与恒星天体物理 · 物理学 2015-06-18 Y. Wang , G. Qin

The scenario of twin coronal mass ejections (CMEs), i.e., a fast and wide primary CME (priCME) preceded by previous CMEs (preCMEs), has been found to be favorable to a more efficient particle acceleration in large solar energetic particle…

太阳与恒星天体物理 · 物理学 2021-11-03 Bin Zhuang , Noé Lugaz , Tingyu Gou , Liuguan Ding

Large SEPs can cause adverse space weather hazard to humans technology and such events are especially associated with halo coronal mass ejections (CMEs). But in turn, a significant portion of halo-CMEs are not associated with large SEPs.…

太阳与恒星天体物理 · 物理学 2025-06-30 Xuchun Duan , Ting Li , Yijun Hou , Yang Wang , Yue Li , Yining Zhang , Zheng Sun , Guiping Zhou

Solar energetic particles acceleration by a shock wave accompanying a coronal mass ejection (CME) is studied. The description of the accelerated particle spectrum evolution is based on the numerical calculation of the diffusive transport…

高能天体物理现象 · 物理学 2017-02-09 A. S. Petukhova , I. S. Petukhov , S. I. Petukhov , L. T. Ksenofontov

We investigated some properties of coronal mass ejections (CMEs), such as speed, acceleration, polar angle, angular width, and mass, using data acquired by the Large Angle Spectrometric Coronagraph (LASCO) onboard the Solar and Heliospheric…

太阳与恒星天体物理 · 物理学 2016-12-30 A. Compagnino , P. Romano , F. Zuccarello

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

An outstanding problem in heliospheric physics is understanding the acceleration of solar energetic particles (SEP) in coronal mass ejections (CMEs) and flares. A fundamental question is whether the acceleration occurs in interplanetary…

太阳与恒星天体物理 · 物理学 2019-10-09 Kamen Kozarev , Maher A. Dayeh , Ashraf Farahat

Metis, the coronagraph on board Solar Orbiter, provides for the first time coronagraphic imaging in the ultraviolet HI Ly-alpha line and, simultaneously, in polarized visible light, thus providing a host of information on the properties of…

Coronal mass ejections (CMEs) and other solar eruptive phenomena can be physically linked by combining data from a multitude of ground-based and space-based instruments alongside models, however this can be challenging for automated…

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

Coronal mass ejections (CMEs) are large-scale ejections of plasma and magnetic field from the solar corona, which propagate through interplanetary space at velocities of $\sim$100--2500~km~s$^{-1}$. Although plane-of-sky coronagraph…

太阳与恒星天体物理 · 物理学 2011-06-09 Shane A. Maloney , Peter T. Gallagher