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It is well accepted that a magnetic flux rope (MFR) is a critical component of many coronal mass ejections (CMEs), yet how it evolves toward eruption remains unclear. Here we investigate the continuous evolution of a pre-existing MFR, which…

太阳与恒星天体物理 · 物理学 2019-01-30 Wensi Wang , Chunming Zhu , Jiong Qiu , Rui Liu , Kai E. Yang , Qiang Hu

Magnetic flux ropes (MFRs) are fundamental magnetic structures in solar eruptions, whose formation is generally attributed to (1) the emergence of subsurface flux tubes or (2) flux cancellation driven by photospheric horizontal flows and…

太阳与恒星天体物理 · 物理学 2025-12-17 Can Wang , Takaaki Yokoyama , Feng Chen , Chen Xing , Mingde Ding , Zekun Lu

The combination of magnetohydrodynamic (MHD) simulation and multi-wavelength observations is an effective way to study mechanisms of magnetic flux rope eruption. We develop a data-driven MHD model using the zero-$\beta$ approximation. The…

太阳与恒星天体物理 · 物理学 2019-01-23 Yang Guo , Chun Xia , Rony Keppens , M. D. Ding , P. F. Chen

The coronal magnetic field evolution of AR 11437 is simulated by applying the magnetofrictional relaxation technique of Mackay et al. (2011). A sequence of photospheric line-of-sight magnetograms produced by SDO/HMI are used to drive the…

太阳与恒星天体物理 · 物理学 2018-01-10 Stephanie L. Yardley , Duncan H. Mackay , Lucie M. Green

Magnetic flux ropes (MFRs) constitute the core structure of coronal mass ejections (CMEs), but hot debates remain on whether the MFR forms before or during solar eruptions. Furthermore, how flare reconnection shapes the erupting MFR is…

太阳与恒星天体物理 · 物理学 2021-09-20 Chaowei Jiang , Jun Chen , Aiying Duan , Xinkai Bian , Xinyi Wang , Jiaying Li , Peng Zou , Xueshang Feng

Solar eruptions are the most powerful drivers of space weather. To understand their cause and nature, it is crucial to know how the coronal magnetic field evolves before eruption. Here we study the formation process of a relatively…

太阳与恒星天体物理 · 物理学 2020-03-25 Wen He , Chaowei Jiang , Peng Zou , Aiying Duan , Xueshang Feng , Pingbing Zuo , Yi Wang

Erupting magnetic flux ropes (MFRs) play a crucial role in producing solar flares. However, the formation of erupting MFRs in complex coronal magnetic configurations and their subsequent evolution in the flaring events are not fully…

太阳与恒星天体物理 · 物理学 2023-08-30 Avijeet Prasad , Sanjay Kumar , Alphonse C. Sterling , Ronald L. Moore , Guillaume Aulanier , R. Bhattacharyya , Qiang Hu

The formation of the MFRs in the pre-flare stage, and how this leads to coronal rain in a post-eruption magnetic loop is not fully understood. We explore the formation, and eruption of MFRs, followed by the appearance of coronal rain in the…

太阳与恒星天体物理 · 物理学 2024-08-07 Samrat Sen , Avijeet Prasad , Valeriia Liakh , Rony Keppens

Coronal mass ejections (CMEs) are powerful drivers of space weather, with magnetic flux ropes (MFRs) widely regarded as their primary precursors. However, the variation in reconnection flux during the evolution of MFR during CME eruptions…

太阳与恒星天体物理 · 物理学 2026-04-16 Samriddhi Sankar Maity , Piyali Chatterjee , Ranadeep Sarkar , Ijas S. Mytheen

Aiming to capture the formation and eruption of flux ropes (FRs) in the source active regions (ARs), we simulate the coronal magnetic field evolution of the AR 11429 employing the time-dependent magneto-friction model (TMF). The initial…

太阳与恒星天体物理 · 物理学 2024-09-24 P. Vemareddy

Extreme ultraviolet (EUV) images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) are providing new insights into the early phase of CME evolution. Observations now show the ejection of magnetic flux…

太阳与恒星天体物理 · 物理学 2014-09-05 Paolo Pagano , Duncan H. Mackay , Stefaan Poedts

Filament eruptions and coronal mass ejections are physical phenomena related to magnetic flux ropes carrying electric current. A magnetic flux rope is a key structure for solar eruptions, and when it carries a southward magnetic field…

太阳与恒星天体物理 · 物理学 2024-08-14 Brigitte Schmieder , Jinhan Guo , Stefaan Poedts

Radiative magnetohydrodynamic simulation includes sufficiently realistic physics to allow for the synthesis of remote sensing observables that can be quantitatively compared with observations. We analyze the largest flare in a simulation of…

太阳与恒星天体物理 · 物理学 2023-06-28 Feng Chen , Matthias Rempel , Yuhong Fan

In this work, we investigate the formation of a magnetic flux rope (MFR) above the central polarity inversion line (PIL) of NOAA Active Region 12673 during its early emergence phase. Through analyzing the photospheric vector magnetic field,…

太阳与恒星天体物理 · 物理学 2019-10-15 Lijuan Liu , Xin Cheng , Yuming Wang , Zhenjun Zhou

Investigating the early-stage evolution of an erupting flux rope from the Sun is important to understand the mechanisms of how it looses its stability and its space weather impacts. Our aim is to develop an efficient scheme for tracking the…

太阳与恒星天体物理 · 物理学 2023-09-13 Andreas Wagner , Emilia K. J. Kilpua , Ranadeep Sarkar , Daniel J. Price , Anshu Kumari , Farhad Daei , Jens Pomoell , Stefaan Poedts

A filament eruption was observed on October 31, 2010 in the images recorded by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) in its Extreme Ultra-Violet (EUV) channels. The filament showed a slow rise…

太阳与恒星天体物理 · 物理学 2016-04-18 V. Aparna , Durgesh Tripathi

It is widely believed that magnetic flux ropes are the key structure of solar eruptions; however, their observable counterparts are not clear yet. We study a flare associated with flux rope eruption in a comprehensive radiative…

太阳与恒星天体物理 · 物理学 2022-07-20 Can Wang , Feng Chen , Mingde Ding , Zekun Lu

Helical magnetic flux rope (MFR) is a fundamental structure of corona mass ejections (CMEs) and has been discovered recently to exist as a sigmoidal channel structure prior to its eruption in the extreme ultraviolet (EUV) high temperature…

太阳与恒星天体物理 · 物理学 2015-05-20 X. Cheng , M. D. Ding , C. Fang

The structure of the coronal magnetic field prior to eruptive processes and the conditions for the onset of eruption are important issues that can be addressed through studying the magnetohydrodynamic stability and evolution of nonlinear…

太阳与恒星天体物理 · 物理学 2014-07-10 B. Kliem , Y. N. Su , A. A. van Ballegooijen , E. E. DeLuca

Context. Data-constrained models incorporate observed photospheric magnetic fields. However, due to the lack of magnetic field information in the rest of the solar atmosphere, models rely on extrapolations that, in most cases, neglect the…

太阳与恒星天体物理 · 物理学 2026-05-20 M. V. Sieyra , A. Strugarek , A. Prasad , A. Wagner , P. Démoulin , F. Moreno-Insertis , A. J. Finley , R. Joshi , A. Blaise , A. S. Brun , E. Buchlin
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