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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

Solar coronal mass ejections (CMEs) show a large variety in their kinematic properties. CMEs originating in active regions and accompanied by strong flares are usually faster and accelerated more impulsively than CMEs associated with…

天体物理学 · 物理学 2007-10-11 T. Toeroek , B. Kliem

Coronal mass ejections (CMEs) stand as intense eruptions of magnetized plasma from the Sun, playing a pivotal role in driving significant changes of the heliospheric environment. Deducing the properties of CMEs from their progenitors in…

太阳与恒星天体物理 · 物理学 2024-07-15 J. H. Guo , L. Linan , S. Poedts , Y. Guo , B. Schmieder , A. Lani , Y. W. Ni , M. Brchnelova , B. Perri , T. Baratashvili , S. T. Li , P. F. Chen

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

The near-Sun kinematics of coronal mass ejections (CMEs) determine the severity and arrival time of associated geomagnetic storms. We investigate the relationship between the deprojected speed and kinetic energy of CMEs and magnetic…

太阳与恒星天体物理 · 物理学 2018-09-19 Sanchita Pal , Dibyendu Nandy , Nandita Srivastava , Nat Gopalswamy , Suman Panda

Coronal mass ejections (CMEs) are intense solar explosive eruptions. CMEs are highly important players in solar-terrestrial relationships, and they have important consequences for major geomagnetic storms and energetic particle events. It…

空间物理 · 物理学 2019-02-20 Hengqiang Feng , Yan Zhao , Guoqing Zhao , Qiang Liu , Dejin Wu

With the global view and high-cadence observations from SDO/AIA and STEREO, many spatially separated solar eruptive events appear to be coupled. However, the mechanisms for "sympathetic" events are still largely unknown. In this study, we…

太阳与恒星天体物理 · 物理学 2016-03-17 M. Jin , C. J. Schrijver , M. C. M. Cheung , M. L. DeRosa , N. V. Nitta , A. M. Title

Coronal mass ejections (CMEs) are tightly related to filament eruptions and usually are their continuation in the upper solar corona. It is common practice to divide all observed CMEs into fast and slow ones. Fast CMEs usually follow…

太阳与恒星天体物理 · 物理学 2019-06-19 B. Filippov

Coronal mass ejections (CMEs) are energetic expulsions of organized magnetic features from the Sun. The study of CME quasi-periodicity helps establish a possible relationship between CMEs, solar flares, and geomagnetic disturbances. We used…

太阳与恒星天体物理 · 物理学 2023-02-15 Xia Li , Hui Deng , Feng Wang , Linhua Deng , Ying Mei

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…

We performed magnetohydrodynamic simulation of a formation process of coronal mass ejections (CMEs), focusing on interaction (reconnection) between an ejecting flux rope and its ambient field. We examined three cases with different ambient…

太阳与恒星天体物理 · 物理学 2015-05-19 Daikou Shiota , Kanya Kusano , Takahiro Miyoshi , Kazunari Shibata

Coronal mass ejections (CMEs) are the main drivers of geomagnetic disturbances, but the effects of their interaction with Earth's magnetic field depend on their magnetic configuration and orientation. Fitting and reconstruction techniques…

空间物理 · 物理学 2018-04-09 Nada Al-Haddad , Teresa Nieves-Chinchilla , Neel P. Savani , Noe Lugaz , Ilia I. Roussev

Current coronal mass ejection (CME) models set their lower boundary to be in the lower corona. They do not calculate accurately the transfer of free magnetic energy from the convection zone to the magnetically dominated corona because they…

太阳与恒星天体物理 · 物理学 2015-05-19 James E. Leake , Mark G. Linton , Spiro K. Antiochos

In this article, we compare the properties of two coronal mass ejections (CMEs) that show similar source region characteristics but different evolutionary behavior in the later phases. We discuss the two events in terms of their near-Sun…

太阳与恒星天体物理 · 物理学 2022-01-19 Syed Ibrahim , Wahab Uddin , Bhuwan Joshi , Ramesh Chandra , Arun Kumar Awasthi

The process by which the Sun affects the terrestrial environment on short timescales is predominately driven by the amount of magnetic reconnection between the solar wind and Earth's magnetosphere. Reconnection occurs most efficiently when…

地球与行星天体物理 · 物理学 2015-06-19 N. P. Savani , A. Vourlidas , A. Szabo , M. L. Mays , I. G. Richardson , B. J. Thompson , A. Pulkkinen , R. Evans , T. Nieves-Chinchilla

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 dimmings have been observed extensively in the past two decades. Due to their close association with coronal mass ejections (CMEs), there is a critical need to improve our understanding of the physical processes that cause…

太阳与恒星天体物理 · 物理学 2022-04-13 Meng Jin , Mark C. M. Cheung , Marc L. DeRosa , Nariaki V. Nitta , Carolus J. Schrijver

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

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

The primary objective of this study is to connect the coronal mass ejections (CMEs) to their source regions, primarily creating a CME source region (CSR) catalogue, and secondly probing into the influence the source regions have on…

太阳与恒星天体物理 · 物理学 2023-10-27 Satabdwa Majumdar , Ritesh Patel , Vaibhav Pant , Dipankar Banerjee , Aarushi Rawat , Abhas Pradhan , Paritosh Singh
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