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We report flare ribbons approach (FRA) during a multiple-ribbon M-class flare on 2015 November 4 in NOAA AR 12443, obtained by the Interface Region Imaging Spectrograph and the Solar Dynamics Observatory. The flare consisted of a pair of…

太阳与恒星天体物理 · 物理学 2017-10-18 Ting Li , Jun Zhang , Yijun Hou

We present a comprehensive analysis of the formation and evolution of a fan-spine-like configuration that developed over a complex photospheric configuration where dispersed negative polarity regions were surrounded by positive polarity…

太阳与恒星天体物理 · 物理学 2021-02-03 Prabir K. Mitra , Bhuwan Joshi

We report a detailed analysis of a failed eruption and flare in active region 12018 on 2014 April 3 using multiwavelength observations from SDO/AIA, IRIS, STEREO, and Hinode/SOT. At least four jets were observed to emanate from the cusp of…

太阳与恒星天体物理 · 物理学 2023-02-15 Pankaj Kumar , Judith T. Karpen , Spiro K. Antiochos , C. Richard DeVore , Peter F. Wyper , 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 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…

太阳与恒星天体物理 · 物理学 2014-07-02 Z. Huang , M. S. Madjarska , K. Koleva , J. G. Doyle , P. Duchlev , M. Dechev , K. Reardon

With the aim of understanding how the magnetic properties of active regions (ARs) control the eruptive character of solar flares, we analyze 719 flares of Geostationary Operational Environmental Satellite (GOES) class $\geq$C5.0 during…

太阳与恒星天体物理 · 物理学 2021-09-01 Ting Li , Anqin Chen , Yijun Hou , Astrid M. Veronig , Shuhong Yang , Jun Zhang

A single case study of a CBP in an equatorial coronal hole with an exceptionally large size is investigated to extend our understanding of the formation of mini-filaments, their destabilisation and the origin of the eruption triggering the…

太阳与恒星天体物理 · 物理学 2020-10-28 Maria S. Madjarska , Klaus Galsgaard , Duncan H. Mackay , Kostadinka Koleva , Momchil Dechev

We report microwave spectral imaging observations of an erupting magnetic flux rope during the early impulsive phase of the X8.2-class limb flare on 2017 September 10, obtained by the Expanded Owens Valley Solar Array. A few days prior to…

太阳与恒星天体物理 · 物理学 2020-06-10 Bin Chen , Sijie Yu , Katharine K. Reeves , Dale E. Gary

Three homologous C-class flares and one last M-class flare were observed by both the Solar Dynamics Observatory (SDO) and the Hinode EUV Imaging Spectrometer (EIS) in the AR 11429 on March 9, 2012. All the recurrent flares occurred within a…

太阳与恒星天体物理 · 物理学 2017-04-26 V. Polito , G. Del Zanna , G. Valori , E. Pariat , H. E. Mason , J. Dudik , M. Janvier

When several solar flares with comparable classes occur successively at the same location and exhibit similar morphological features, they are called homologous flares. During 2012 May 8-10, five M-class homologous circular-ribbon flares…

太阳与恒星天体物理 · 物理学 2025-06-11 Shuhong Yang , Ruisheng Zheng , Yijun Hou , Yuandeng Shen , Yin Li , Xiaoshuai Zhu , Ting Li , Guiping Zhou

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

In this paper, we report the multiwavelength observations of the partial filament eruption associated with a C1.2 class flare in NOAA active region 11236 on 13 June 2011. The event occurred at the eastern limb in the field of view (FOV) of…

太阳与恒星天体物理 · 物理学 2022-10-13 Yanjie Zhang , Qingmin Zhang , Jun Dai , Dong Li , Haisheng Ji

Two X-class solar flares occurred on 2017 September 6 from active region NOAA 12673: the first one is a confined X2.2 flare, and it is followed only $\sim 3$ hours later by the second one, which is the strongest flare in solar cycle 24,…

太阳与恒星天体物理 · 物理学 2020-02-19 Peng Zou , Chaowei Jiang , Fengsi Wei , Xueshang Feng , Pingbing Zuo , Yi Wang

We analysed Interface-Region Imaging Spectrograph (IRIS) and the Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA) observations of a small coronal jet that occurred at the solar west limb on 2014 August 29. The jet source…

太阳与恒星天体物理 · 物理学 2024-05-09 Pradeep Kayshap , Judith T. Karpen , Pankaj Kumar

We firstly report the simultaneous activities of a slipping motion of flare loops and a slipping eruption of a flux rope in 131 {\AA} and 94 {\AA} channels on 2014 February 02. The east hook-like flare ribbon propagated slippingly at a…

太阳与恒星天体物理 · 物理学 2015-06-22 Ting Li , Jun Zhang

We study the relationship between implosive motions in a solar flare, and the energy redistribution in the form of oscillatory structures and particle acceleration. The flare SOL2012-03-09T03:53 (M6.4) shows clear evidence for an…

太阳与恒星天体物理 · 物理学 2015-06-17 P. J. A. Simões , L. Fletcher , H. S. Hudson , A. J. B. Russell

We study the formation of four coronal mass ejections (CMEs) originating from homologous blowout jets. All of the blowout jets originated from NOAA active region (AR) 11515 on 2012 July 2, within a time interval of $\approx$14 hr. All of…

太阳与恒星天体物理 · 物理学 2024-05-07 Binal D. Patel , Bhuwan Joshi , Alphonse C. Sterling , Ronald L. Moore

In this paper, we present multiwavelength observations of the triggering of a failed-eruptive M-class flare from the active region NOAA 11302, and investigate the possible reasons for the associated failed eruption. Photospheric…

太阳与恒星天体物理 · 物理学 2022-03-02 Prabir K. Mitra , Bhuwan Joshi , Astrid M. Veronig , Thomas Wiegelmann

RHESSI and Hinode observations of a GOES B-class flare are combined to investigate the origin of 15 MK plasma. The absence of any detectable hard X-ray emission coupled with weak blueshifted emission lines (indicating upward velocities…

太阳与恒星天体物理 · 物理学 2010-03-03 Ryan O. Milligan

Coronal mass ejections (CMEs) are large-scale eruptions of plasma from the coronae of stars. Understanding the plasma processes involved in CME initiation has applications to space weather forecasting and laboratory plasma experiments.…

太阳与恒星天体物理 · 物理学 2018-03-21 Alexander W. James , Gherardo Valori , Lucie M. Green , Yang Liu , Mark C. M. Cheung , Yang Guo , Lidia van Driel-Gesztelyi