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Using high spatial and temporal data from the New Vacuum Solar Telescope (NVST) and the Solar Dynamics Observatory (SDO), we present unambiguous observations of recurrent two-sided loop jets caused by magnetic reconnection between erupting…

Solar and Stellar Astrophysics · Physics 2020-01-08 Bo Yang , Jiayan Yang , Yi Bi , Zhe Xu , Junchao Hong , Haidong Li , Hechao Chen

In this paper, we present a multi-wavelength analysis of two X-class solar eruptive flares of classes X2.2 and X9.3 that occurred in the sigmoidal active region NOAA 12673 on 2017 September 6, by combining observations of Atmospheric…

Solar and Stellar Astrophysics · Physics 2018-12-26 Prabir K. Mitra , Bhuwan Joshi , Avijeet Prasad , Astrid M. Veronig , R. Bhattacharyya

Solar filament eruptions play a key role in driving space weather, yet their fine-scale evolution remains poorly understood due to observational limitations. Using unprecedented high-resolution observations from Solar Orbiter's Extreme…

We make a comparative analysis for two filaments that showed quite different activation in response to the flux emergence within the filament channels. The observations from the Solar Dynamics Observatory (SDO) and Global Oscillation…

Solar and Stellar Astrophysics · Physics 2015-08-06 Ting Li , Jun Zhang , Haisheng Ji

We present a detailed analysis of a confined filament eruption and jet associated with a C1.5 class solar flare. Multi-wavelength observations from GONG and SDO reveal the filament forming over several days following the emergence and then…

Solar and Stellar Astrophysics · Physics 2020-01-08 Lauren Doyle , Peter F. Wyper , Eamon Scullion , James A. McLaughlin , Gavin Ramsay , J. Gerard Doyle

We investigated the initiation and the evolution of an X7.1-class solar flare observed in solar active region NOAA 13842 on October 1, 2024, based on a data-constrained magnetohydrodynamic (MHD) simulation. The nonlinear force-free field…

Solar and Stellar Astrophysics · Physics 2025-08-12 Keitarou Matsumoto , Satoshi Inoue , Nian Liu , Keiji Hayashi , Ju Jing , Haimin Wang

Using high spatial and temporal resolution H$\alpha$ data from the New Vacuum Solar Telescope (NVST) and simultaneous observations from the Solar Dynamics Observatory (SDO), we present a rare event on the interaction between two filaments…

Solar and Stellar Astrophysics · Physics 2017-04-12 Liheng Yang , Xiaoli Yan , Ting Li , Zhike Xue , Yongyuan Xiang

A flare and fast coronal mass ejection originated between solar active regions NOAA 11514 and 11515 on July 1, 2012 in response to flux emergence in front of the leading sunspot of the trailing region 11515. Analyzing the evolution of the…

Solar and Stellar Astrophysics · Physics 2015-08-06 Rohan E. Louis , Bernhard Kliem , B. Ravindra , Georgios Chintzoglou

We investigate the interaction between two filaments (F1 and F2) and their subsequent magnetic reconnection in active region (AR) NOAA 13296 and AR NOAA 13293 on May 9, 2023, utilizing high spatial and temporal resolution and…

Magnetic null has long been recognized as a special structure serving as a preferential site for magnetic reconnection (MR). However, the direct observational study of MR at null-points is largely lacking. Here, we show the observations of…

Solar and Stellar Astrophysics · Physics 2016-10-12 J. Q. Sun , J. Zhang , K. Yang , X. Cheng , M. D. Ding

We present the observations of a double-decker filament to study its formation, triggering, and eruption physics. It is observed that the double-decker filament was formed by splitting of an original single filament. During the splitting…

Solar and Stellar Astrophysics · Physics 2018-06-13 Zhanjun Tian , Yuandeng Shen , Yu Liu

Mass drainage is frequently observed in solar filaments. During filament eruptions, falling material most likely flows along magnetic field lines, which may provide important clues for the magnetic structures of filaments. Here we study…

Solar and Stellar Astrophysics · Physics 2025-07-22 Yidian Wu , Rui Liu , Runbin Luo , Wensi Wang

We study a sequence of eruptive events including filament eruption, a GOES C4.3 flare and a coronal mass ejection. We aim to identify the possible trigger(s) and precursor(s) of the filament destabilisation; investigate flare kernel…

Solar and Stellar Astrophysics · Physics 2014-07-02 Z. Huang , M. S. Madjarska , K. Koleva , J. G. Doyle , P. Duchlev , M. Dechev , K. Reardon

We have studied a B-class solar flare and an associated filament eruption through multi-wavelength observations. The flare triggers at 16:24~UT on June 7$^{th}$, 2017 from an active region (AR) 12661, and it maximizes at 16:54~UT. The…

Solar and Stellar Astrophysics · Physics 2026-01-27 B. Suresh Babu , Pradeep kayshap , Ashok Kumar Baral , Bhola N. Dwivedi

We study a complex GOES M1.1 circular ribbon flare and related pre-flare activity on 26 January 2015 [SOL26-01-2015] in solar active region NOAA 12268. This flare activity was observed by the AIA on board SDO and the RHESSI. The examination…

Solar and Stellar Astrophysics · Physics 2020-06-17 Pooja Devi , Bhuwan Joshi , Ramesh Chandra , Prabir K. Mitra , Astrid M. Veronig3 , Reetika Joshi

We perform a data-constrained simulation with the zero-$\beta$ assumption to study the mechanisms of strong rotation and failed eruption of a filament in active region 11474 on 2012 May 5 observed by Solar Dynamics Observatory and Solar…

Solar and Stellar Astrophysics · Physics 2023-12-13 Xiaomeng Zhang , Jinhan Guo , Yang Guo , Mingde Ding , Rony Keppens

We used multi-wavelength high-resolution data from ARIES, THEMIS, and SDO instruments, to analyze a non-standard, C3.3 class flare produced within the active region NOAA 11589 on 2012 October 16. Magnetic flux emergence and cancellation…

Solar and Stellar Astrophysics · Physics 2016-02-22 K. Dalmasse , R. Chandra , B. Schmieder , G. Aulanier

We analyze a unique event with an M1.8 confined circular-ribbon flare on 2016 February 13, with successive formations of two circular ribbons at the same location. The flare had two distinct phases of UV and EUV emissions with an interval…

Solar and Stellar Astrophysics · Physics 2018-06-13 Ting Li , Shuhong Yang , Qingmin Zhang , Yijun Hou , Jun Zhang

We carried out a multi-wavelength study of a CME and a medium-size 1B/C1.3 flare occurring on 12 May 1997. We present the investigation of magnetic-field variations in the NOAA Active Region 8038 which was observed on the Sun during 7--16…

Solar and Stellar Astrophysics · Physics 2011-06-15 Rajmal Jain , Arun K. Awasthi , Babita Chandel , Lokesh Bharti , Y. Hanaoka , A. L. Kiplinger

We present the dynamics of two filaments and a C-class flare observed in NOAA 11589 on 2012 October 16. We used the multi-wavelength high-resolution data from SDO, as well as THEMIS and ARIES ground-based observations. The observations show…

Solar and Stellar Astrophysics · Physics 2015-06-17 K. Dalmasse , R. Chandra , B. Schmieder , G. Aulanier
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