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We report the observations of a moderate but relatively intense geo-effective solar eruption on 2015 November 4 from the peripheral diffusive polarities of active region 12443. We use space-borne Solar Dynamics Observatory and ACE…

太阳与恒星天体物理 · 物理学 2018-08-22 Rui Wang , Ying D. Liu , Huidong Hu , Xiaowei Zhao

Solar filament eruptions play a crucial role in triggering coronal mass ejections (CMEs). More than 80 % of eruptions lead to a CME. This correlation has been studied extensively during the past solar cycles and the last long solar minimum.…

太阳与恒星天体物理 · 物理学 2015-06-12 B. Schmieder , P. Demoulin , G. Aulanier

Magnetic reconnection, the rearrangement of magnetic field topology, is a fundamental physical process in magnetized plasma systems all over the universe1,2. Its process is difficult to be directly observed. Coronal structures, such as…

太阳与恒星天体物理 · 物理学 2016-09-21 Leping Li , Jun Zhang , Hardi Peter , Eric Priest , Huadong Chen , Lijia Guo , Feng Chen , Duncan Mackay

We explore the processes of repetitive build-up and explosive release of magnetic energy together with the formation of magnetic flux ropes that eventually resulted into three homologous eruptive flares of successively increasing…

太阳与恒星天体物理 · 物理学 2023-02-08 Suraj Sahu , Bhuwan Joshi , Avijeet Prasad , Kyung-Suk Cho

We present observations of a failed eruption of a magnetic flux rope recorded during the M6.2 flare of 14 July 2004. The observations were mainly made with TRACE 171 {\AA} and 1600 {\AA} filters. The flare was accompanied by a…

太阳与恒星天体物理 · 物理学 2015-05-27 Tomasz Mrozek

We report on three-dimensional (3D) Magnetohydrodynamic (MHD) simulations of recurrent eruptions in emerging flux regions. We find that reconnection of sheared fieldlines, along the polarity inversion line of an emerging bipolar region,…

太阳与恒星天体物理 · 物理学 2017-12-06 P. Syntelis , V. Archontis , K. Tsinganos

Explosive energy release is a common phenomenon occurring in magnetized plasma systems ranging from laboratories, Earth's magnetosphere, the solar corona and astrophysical environments. Its physical explanation is usually attributed to…

太阳与恒星天体物理 · 物理学 2012-03-23 J. Zhang , X. Cheng , M. D. Ding

Magnetic flux rope is believed to be an important structural component of coronal mass ejections (CMEs). While there exist much observational evidence of the flux rope after the eruption, e.g., as seen in remote-sensing coronagraph images…

太阳与恒星天体物理 · 物理学 2015-05-27 X. Cheng , J. Zhang , Y. Liu , M. D. Ding

We aim at investigating the morphology, kinematic and helicity evolution of a loop-like prominence during its eruption. We use multi-instrument observations from AIA/SDO, EUVI/STEREO and LASCO/SoHO. The kinematic, morphological,…

太阳与恒星天体物理 · 物理学 2015-06-04 K. Koleva , M. S. Madjarska , P. Duchlev , C. J. Schrijver , J. -C. Vial , E. Buchlin , M. Dechev

Context. Some of the most dynamic active regions are associated with complex photospheric magnetic configurations such as quadrupolar regions, and especially ones with a $\delta$-spot configuration and a strong Polarity Inversion Line…

太阳与恒星天体物理 · 物理学 2019-10-09 P. Syntelis , E. J. Lee , C. W. Fairbairn , V. Archontis , A. W. Hood

By using H$\alpha$, He I 10830, EUV and soft X-ray (SXR) data, we examined a filament eruption that occurred on a quiet-sun region near the center of the solar disk on 2006 January 12, which disturbed a sigmoid overlying the filament…

太阳与恒星天体物理 · 物理学 2009-01-21 Li-Heng Yang , Yun-Chun Jiang , Dong-bai Ren

Solar flares are one of the most energetic events in the solar atmosphere. It is widely accepted that flares are powered by magnetic reconnection in the corona. An eruptive flare is usually accompanied by a coronal mass ejection, both of…

太阳与恒星天体物理 · 物理学 2017-02-08 Y. Li , X. Sun , M. D. Ding , J. Qiu , E. R. Priest

We present a detailed study of the formation of an inverse S-shaped filament prior to its eruption in active region NOAA 11884 from October 31 to November 2, 2013. In the initial stage, clockwise rotation of a small positive sunspot around…

太阳与恒星天体物理 · 物理学 2016-11-23 X. L. Yan , E. R. Priest , Q. L. Guo , Z. K. Xue , J. C. Wang , L. H. Yang

Coronal mass ejections (CMEs) and coronal jets are two types of common solar eruptive phenomena, which often independently happen at different spatial scales. In this work, we present a stereoscopic observation of a large-scale CME flux…

太阳与恒星天体物理 · 物理学 2021-04-21 Hechao Chen , Jiayan Yang , Junchao Hong , Haidong Li , Yadan Duan

Solar filaments/prominences are one of the most common features in the corona, which may lead to energetic coronal mass ejections (CMEs) and flares when they erupt. Filaments are about one hundred times cooler and denser than the coronal…

太阳与恒星天体物理 · 物理学 2017-02-22 Hongqiang Song , Yao Chen , Bo Li , Leping Li , Liang Zhao , Jiansen He , Die Duan , Xin Cheng , Jie Zhang

This Letter reports observations of an event that connects all major classes of solar eruptions: those that erupt fully into the heliosphere versus those that fail and are confined to the Sun, and those that eject new flux into the…

太阳与恒星天体物理 · 物理学 2021-06-23 E I Mason , Spiro Antiochos , Angelos Vourlidas

A sequence of apparently coupled eruptions was observed on 2010 August 1-2 by SDO and STEREO. The eruptions were closely synchronized with one another, even though some of them occurred at widely separated locations. In an attempt to…

太阳与恒星天体物理 · 物理学 2015-06-11 V. S. Titov , Z. Mikic , T. Török , J. A. Linker , O. Panasenco

We present a detailed three-dimensional (3D) view of a prominence eruption, coronal loop expansion, and coronal mass ejections (CMEs) associated with an M4.4 flare that occurred on 2011 March 8 in the active region NOAA 11165. Full-disk…

The disintegration of solar filaments via mass drainage is a frequently observed phenomenon during a variety of filament activities. It is generally considered that the draining of dense filament material is directed by both gravity and…

太阳与恒星天体物理 · 物理学 2018-03-28 Rui Liu , Jun Chen , Yuming Wang

How structures, e.g., magnetic loops, in the upper atmosphere, i.e., the transition region and corona, are heated and sustained is one of the major unresolved issues in solar and stellar physics. Various theoretical and observational…

太阳与恒星天体物理 · 物理学 2023-06-07 Leping Li , Hui Tian , Huadong Chen , Hongqiang Song , Zhenyong Hou , Xianyong Bai , Kaifan Ji , Yuanyong Deng