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Coronal mass ejections (CMEs) and solar flares are the large-scale and most energetic eruptive phenomena in our solar system and able to release a large quantity of plasma and magnetic flux from the solar atmosphere into the solar wind.…

太阳与恒星天体物理 · 物理学 2017-07-13 X. Cheng , Y. Guo , M. D. Ding

Employing Solar Dynamics Observatory (SDO)/Atmospheric Imaging Assembly (AIA) multi-wavelength images, we report the coronal condensation during the magnetic reconnection (MR) between a system of open and closed coronal loops. Higher-lying…

太阳与恒星天体物理 · 物理学 2018-09-05 Leping Li , Jun Zhang , Hardi Peter , Lakshmi Pradeep Chitta , Jiangtao Su , Chun Xia , Hongqiang Song , Yijun Hou

X-ray and EUV observations are an important diagnostic of various plasma parameters of the solar atmosphere during solar flares. Soft X-ray and EUV observations often show coronal sources near the top of flaring loops, while hard X-ray…

太阳与恒星天体物理 · 物理学 2015-06-11 Marina Battaglia , Eduard P. Kontar

Two major coronal mass ejections (CMEs) observed during the Whole Heliosphere Interval (WHI) are compared with the catastrophe (CA) and eruptive flux rope (EF) models. The objective is to test two distinct mechanisms for CMEs by modeling…

太阳与恒星天体物理 · 物理学 2015-12-23 Chia-Hsien Lin , James Chen

One of the most prominent sources for energetic particles in our solar system are huge eruptions of magnetised plasma from the Sun called coronal mass ejections (CMEs), which usually drive shocks that accelerate charged particles up to…

太阳与恒星天体物理 · 物理学 2023-12-13 D. E. Morosan , J. Pomoell , C. Palmroos , N. Dresing , E. Asvestari , R. Vainio , E. K. J. Kilpua , J. Gieseler , A. Kumari , I. C. Jebaraj

Numerical models of the solar wind and coronal mass ejections (CMEs) utilize photospheric magnetic field observations to prescribe the inner boundary conditions for the plasma solutions. These magnetic field data are available to the…

太阳与恒星天体物理 · 物理学 2026-02-03 Nishtha Sachdeva , Zhenguang Huang , Gabor Toth , Hongfan Chen , Ward B. Manchester , Bart van der Holst

A solar flare is composed of impulsive energy release events by magnetic reconnection, which forms and heats flare loops. Recent studies have revealed a two-phase evolution pattern of UV 1600\AA\ emission at the feet of these loops: a rapid…

太阳与恒星天体物理 · 物理学 2013-09-16 Jiong Qiu , Zoe Sturrock , Dana W. Longcope , James A. Klimchuk , Wen-Juan , Liu

We used data from the Helioseismic and Magnetic Imager (HMI), and Atmospheric Imaging Assembly (AIA) on the \textit{Solar Dynamics Observatory} (SDO) to study coronal loops at small scales, emerging in the quiet Sun. With HMI line-of-sight…

太阳与恒星天体物理 · 物理学 2013-04-15 LP. Chitta , R. Kariyappa , A. A. van Ballegooijen , E. E. DeLuca , S. S. Hasan , A. Hanslmeier

We present the multi-wavelength observations of asymmetric filament eruption, associated CME and coronal downflows on 2012 June 17-18 during 20:00-05:00 UT. We use SDO/AIA, STEREO-B/SECCHI observations to understand the filament eruption…

太阳与恒星天体物理 · 物理学 2015-06-15 N. C. Joshi , A. K. Srivastava , B. Filippov , W. Uddin , P. Kayshap , R. Chandra

On 2022 March 28 two successive coronal mass ejections (CMEs) were observed by multiple spacecraft and resulted in a magnetic cloud (MC) at 1 AU. We investigate the propagation and interaction properties of the two CMEs correlated with the…

空间物理 · 物理学 2024-06-21 Chong Chen , Ying D. Liu , Bei Zhu , Huidong Hu , Rui Wang

We perform and analyze results of a global magnetohydrodyanmic (MHD) simulation of the fast coronal mass ejection (CME) that occurred on 2011 March 7. The simulation is made using the newly developed Alfv\'en Wave Solar Model (AWSoM), which…

太阳与恒星天体物理 · 物理学 2017-01-18 M. Jin , W. B. Manchester , B. van der Holst , I. Sokolov , G. Toth , A. Vourlidas , C. A. de Koning , T. I. Gombosi

Context: Hot coronal jets are a basic observed feature of the solar atmosphere whose physical origin is still being actively debated. Aims: We study six recurrent jets occurring in the active region NOAA 12644 on April 04, 2017. They are…

Coronal Mass ejections or CMEs are large dynamical solar-corona events. The mass balance and kinematics of a fast limb CME, including its prominence progenitor and the associated flare, will be compared with computed magnetic structures to…

天体物理学 · 物理学 2009-11-13 Serge Koutchmy , Vladimir Slemzin , Boris Filippov , Jacques-Clair Noens , David Romeuf , Leon Golub

On 13 June 2010, an eruptive event occurred near the solar limb. It included a small filament eruption and the onset of a relatively narrow coronal mass ejection (CME) surrounded by an extreme ultraviolet wave front recorded by the Solar…

Most simulations of coronal mass ejections (CMEs) to date either focus on the interplanetary propagation of a giant plasma "blob" without paying too much attention to its origin and to the formation process or they focus on the complex…

太阳与恒星天体物理 · 物理学 2014-11-20 N. Lugaz , I. I. Roussev , I. V. Sokolov , C. Jacobs

Solar energetic particle (SEP) events are associated with coronal mass ejections (CMEs) and/or solar flares. SEPs travel through the corona and interplanetary space to reach Earth, posing a radiation hazard to spacecraft and astronauts…

太阳与恒星天体物理 · 物理学 2024-11-07 Lei Cheng , Ming Zhang , Ryun Young Kwon , David Lario

Understanding and predicting the structure and evolution of coronal mass ejections (CMEs) in the heliosphere remains one of the most sought-after goals in heliophysics and space weather research. A powerful tool for improving current…

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

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

Magnetic flux ropes (MFRs) are believed to be at the heart of solar coronal mass ejections (CMEs). A well-known example is the prominence cavity in the low corona that sometimes makes up a three-part white-light (WL) CME upon its eruption.…

太阳与恒星天体物理 · 物理学 2015-06-22 Bin Chen , Timothy S. Bastian , Dale E. Gary