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相关论文: A Two-Step Magnetic Reconnection in a Confined X-c…

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The coronal magnetic topology significantly affects the outcome of magnetic flux rope (MFR) eruptions. The recently reported nested double null magnetic system remains unclear as to how it affects MFR eruptions. Using observations from the…

太阳与恒星天体物理 · 物理学 2024-10-07 Surui Yao , Yuandeng Shen , Chengrui Zhou , Dongxu Liu , Xinping Zhou

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

We report on observations of the two newly-identified reconnection geometries involving erupting flux ropes. In 3D, a flux rope can reconnect either with a surrounding coronal arcade (recently named "ar-rf" reconnection) or with itself…

太阳与恒星天体物理 · 物理学 2020-01-08 Jaroslav Dudik , Juraj Lorincik , Guillaume Aulanier , Alena Zemanova , Brigitte Schmieder

Magnetic flux ropes (MFRs) are thought to be the central structure of solar eruptions, and their ideal MHD instabilities can trigger the eruption. Here we performed a study of all the MFR configurations that lead to major solar flares,…

太阳与恒星天体物理 · 物理学 2019-11-06 Aiying Duan , Chaowei Jiang , Wen He , Xueshang Feng , Peng Zou , Jun Cui

The largest X9.3 solar flare in solar cycle 24 and the preceding X2.2 flare occurred on September 6, 2017, in the solar active region NOAA 12673. This study aims to understand the onset mechanism of these flares via analysis of multiple…

太阳与恒星天体物理 · 物理学 2020-05-05 Yumi Bamba , Satoshi Inoue , Shinsuke Imada

Coronal mass ejections are often considered to result from the full eruption of a magnetic flux rope (MFR). However, it is recognized that, in some events, the MFR may release only part of its flux, with the details of the implied splitting…

太阳与恒星天体物理 · 物理学 2018-04-11 X. Cheng , B. Kliem , M. D. Ding

The evolution of an X2.7 solar flare, that occurred in a complex $\beta\gamma\delta$ magnetic configuration region on 2003 November 3 is discussed utilizing a multi-wavelength data set. The very first signature of pre-flare coronal activity…

天体物理学 · 物理学 2009-11-13 Bhuwan Joshi , P. K. Manoharan , Astrid M. Veronig , P. Pant , Kavita Pandey

The 2003 October 28 (X17.2) eruptive flare was a unique event. The coronal electric field and the {\pi}-decay {\gamma}-ray emission flux had the highest values ever inferred in solar flares. This study reveals physical links between the…

Using the observations from the Atmospheric Imaging Assembly (AIA) and Helioseismic and Magnetic Imager (HMI) aboard the Solar Dynamics Observatory (SDO), we investigate six X-class and twenty-nine M-class flares occurring in solar active…

太阳与恒星天体物理 · 物理学 2015-08-06 Huadong Chen , Jun Zhang , Suli Ma , Shuhong Yang , Leping Li , Xin Huang , Junmin Xiao

In this paper, we present a multi-wavelength analysis of an eruptive white-light M3.2 flare which occurred in active region NOAA 10486 on November 1, 2003. Excellent set of high resolution observations made by RHESSI and TRACE provide clear…

太阳与恒星天体物理 · 物理学 2015-05-30 Bhuwan Joshi , Astrid M. Veronig , Jeongwoo Lee , Su-Chan Bong , Sanjiv K. Tiwari , Kyung-Suk Cho

We studied a flare onset process in terms of stability of a three-dimensional (3D) magnetic field in active region 12371 producing an eruptive M6.5 flare in 2015 June 22. In order to reveal the 3D magnetic structure, we first extrapolated…

太阳与恒星天体物理 · 物理学 2020-04-06 Jihye Kang , Satoshi Inoue , Kanya Kusano , Sung-Hong Park , Yong-Jae Moon

We analyze H-alpha images, soft X-ray profiles, magnetograms, extreme ultra-violet images and radio observations of two homologous flare events (M1.4/1N and M9.6/2B) on 20 November 2003 in the active region NOAA 10501 and study properties…

太阳与恒星天体物理 · 物理学 2015-05-14 Pankaj Kumar , P. K. Manoharan , Wahab Uddin

The 2011 January 28 M1.4 flare exhibits two side-by-side candle-flame-shaped flare loop systems underneath a larger cusp-shaped structure during the decay phase, as observed at the northwestern solar limb by the Solar Dynamics Observatory…

太阳与恒星天体物理 · 物理学 2016-04-20 Tingyu Gou , Rui Liu , Yuming Wang , Kai Liu , Bin Zhuang , Jun Chen , Quanhao Zhang , Jiajia Liu

NOAA Active Region (AR) 11429 was the source of twin super-fast Coronal Mass Ejections (CMEs). The CMEs took place within a hour from each other, with the onset of the first taking place in the beginning of March 7, 2012. This AR fulfills…

太阳与恒星天体物理 · 物理学 2015-08-13 Georgios Chintzoglou , Spiros Patsourakos , Angelos Vourlidas

Typical solar flares display two quasi-parallel, bright ribbons on the chromosphere. In between is the polarity inversion line (PIL) separating concentrated magnetic fluxes of opposite polarity in active regions (ARs). Intriguingly a series…

太阳与恒星天体物理 · 物理学 2016-09-30 Rui Liu , Jun Chen , Yuming Wang , Kai Liu

Solar flare ribbons provide an important clue to the magnetic reconnection process and associated magnetic field topology in the solar corona. We detected a large-scale secondary flare ribbon of a circular shape that developed in…

Solar flares are sudden and violent releases of magnetic energy in the solar atmosphere that can be divided in eruptive flares, when plasma is ejected from the solar atmosphere, resulting in a coronal mass ejection (CME), and confined…

太阳与恒星天体物理 · 物理学 2017-05-24 F. P. Zuccarello , R. Chandra , B. Schmieder , G. Aulanier , R. Joshi

We clarify a relationship of the dynamics of a solar flare and a growing Coronal Mass Ejection (CME) by investigating the dynamics of magnetic fields during the X2.2-class flare taking place in the solar active region 11158 on 2011 February…

太阳与恒星天体物理 · 物理学 2015-06-23 S. Inoue , K. Hayashi , T. Magara , G. S. Choe , Y. D. Park

We carry out a comprehensive investigation comparing the three-dimensional magnetic field restructuring, flare energy release, and the helioseismic response, of two homologous flares, the 2011 September 6 X2.1 (FL1) and September 7 X1.8…

太阳与恒星天体物理 · 物理学 2015-06-22 Chang Liu , Na Deng , Jeongwoo Lee , Thomas Wiegelmann , Chaowei Jiang , Brian R. Dennis , Yang Su , Alina Donea , Haimin Wang

An X17.2 solar flare occurred on 2003 October 28, accompanied by multi-wavelength emissions and a high flux of relativistic particles observed at 1AU. We present the analytic results of the TRACE, SOHO, RHESSI, ACE, GOES, hard X-ray…

天体物理学 · 物理学 2013-05-24 C. Li , Y. H. Tang , Y. Dai , C. Fang , J. -C. Vial