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Coronal Mass Ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties as they interact with the variable solar wind. We investigated the heliospheric propagation of 15 Earth-impacting CMEs…

太阳与恒星天体物理 · 物理学 2024-11-05 Sandeep Kumar , Nandita Srivastava , Nat Gopalswamy , Ashutosh Dash

Context. In the scope of space weather forecasting, it is crucial to be able to more reliably predict the arrival time, speed, and magnetic field configuration of coronal mass ejections (CMEs). From the time a CME is launched, the dominant…

太阳与恒星天体物理 · 物理学 2023-09-28 K. Martinic , M. Dumbovic , J. Calogovic , B. Vrsnak , N. Al-Haddad , M. Temmer

In-situ measurements carried out by spacecraft in radial alignment are critical to advance our knowledge on the evolutionary behavior of coronal mass ejections (CMEs) and their magnetic structures during propagation through interplanetary…

太阳与恒星天体物理 · 物理学 2021-08-11 Camilla Scolini , Reka M. Winslow , Noé Lugaz , Stefaan Poedts

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

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

Coronal mass ejections (CMEs) and eruptive flares (EFs) are the most energetic explosions in the solar system. Their underlying origin is the free energy that builds up slowly in the sheared magnetic field of a filament channel. We report…

太阳与恒星天体物理 · 物理学 2019-10-03 Joel T. Dahlin , Spiro K. Antiochos , C. Richard DeVore

Coronal Mass Ejections (CMEs) often show different features in different band-passes. By combining data in white-light (WL) and ultraviolet (UV) bands, we have applied different techniques to derive plasma temperatures, electron density,…

太阳与恒星天体物理 · 物理学 2020-08-19 Beili Ying , Alessandro Bemporad , Li Feng , Lei Lu , Weiqun Gan , Hui Li

Coronal Mass Ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties. This is because CMEs interact with the ambient solar wind and other large-scale magnetic field structures. In this work, we…

太阳与恒星天体物理 · 物理学 2023-10-09 Sandeep Kumar , Dinesha V. Hegde , Nandita Srivastava , Nikolai V. Pogorelov , Nat Gopalswamy , Seiji Yashiro

Coronal mass ejections (CMEs) are violent ejections of magnetized plasma from the Sun, which can trigger geomagnetic storms, endanger satellite operations and destroy electrical infrastructures on the Earth. After systematically searching…

太阳与恒星天体物理 · 物理学 2023-08-09 Hong-peng Lu , Hui Tian , He-chao Chen , Yu Xu , Zhen-yong Hou , Xian-yong Bai , Guang-yu Tan , Zi-hao Yang , Jie Ren

Stealth coronal mass ejections (CMEs) are eruptions from the Sun that have no obvious low coronal signature. These CMEs are characteristically slower events, but can still be geoeffective and affect space weather at Earth. Therefore,…

太阳与恒星天体物理 · 物理学 2019-09-11 Jennifer O'kane , Lucie Green , David M. Long , Hamish Reid

Stellar coronal mass ejections (CMEs) may play an important role in mass- and angular momentum loss of young Sun-like stars. If occurring frequently, they may also have a strong effect on planetary evolution by increasing atmospheric…

太阳与恒星天体物理 · 物理学 2017-09-21 P. Odert , M. Leitzinger , A. Hanslmeier , H. Lammer

It has been suggested that coronal mass ejections (CMEs) remove the magnetic helicity of their coronal source region from the Sun. Such removal is often regarded to be necessary due to the hemispheric sign preference of the helicity, which…

太阳与恒星天体物理 · 物理学 2015-05-20 B. Kliem , S. Rust , N. Seehafer

We investigate how coronal mass ejections (CMEs) propagate through, and interact with, the inner heliosphere between the Sun and Earth, a key question in CME research and space weather forecasting. CME Sun-to-Earth kinematics are…

太阳与恒星天体物理 · 物理学 2015-06-15 Ying D. Liu , Janet G. Luhmann , Noé Lugaz , Christian Möstl , Jackie A. Davies , Stuart D. Bale , Robert P. Lin

Coronal mass ejections (CMEs) are the eruptions of magnetised plasma from the Sun and are considered the main driver of adverse space weather events. Hence, undrstanding its formation process, particularly the magnetic topology, is critical…

太阳与恒星天体物理 · 物理学 2025-02-26 Jinhan Guo , Y. W. Ni , B. Schmieder , Y. Guo , C. Xia , P. Devi , R. Chandra , S. Poedts , R. Joshi , Y. H. Zhou , H. T. Li , P. F. Chen

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…

太阳与恒星天体物理 · 物理学 2021-12-16 Markus J. Aschwanden

Turbulence plays a key role for forming the complex geometry of the large-scale current sheet (CS) and fast energy release in a solar eruption. In this paper, we present full 3D high-resolution simulations for the process of a moderate…

太阳与恒星天体物理 · 物理学 2023-08-21 Jing Ye , John C. Raymond , Zhixing Mei , Qiangwei Cai , Yuhao Chen , Yan Li , Jun Lin

Understanding the propagation of coronal mass ejections (CMEs) through interplanetary space is essential for space weather forecasting. Due to observational limitations, measurements of the photospheric polar magnetic fields remain highly…

太阳与恒星天体物理 · 物理学 2026-03-06 Xiao Zhang , Liping Yang , Xueshang Feng , Hui Tian , Mengxuan Ma , Fang Shen , Jiansen He , Man Zhang , Yufen Zhou , Ziwei Wang , Xinyi Ma , Wangning Zhang

Aims: We investigate whether solar coronal mass ejections are driven mainly by coupling to the ambient solar wind or through the release of internal magnetic energy. Methods: We examine the energetics of 39 flux-rope like coronal mass…

天体物理学 · 物理学 2009-11-13 Prasad Subramanian , Angelos Vourlidas

White-light observations of the solar corona show that there are two characteristic types of Coronal Mass Ejections (CMEs) in terms of speed-height profiles: so-called fast CMEs that attain high speeds low in the corona and slow CMEs that…

天体物理学 · 物理学 2007-05-23 W. Liu , X. P. Zhao , S. T. Wu , P. H. Scherrer

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…

太阳与恒星天体物理 · 物理学 2010-11-15 Jason P. Byrne , Shane A. Maloney , R. T. James McAteer , Jose M. Refojo , Peter T. Gallagher