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We find that a sunspot with positive polarity had an obvious counter-clockwise rotation and resulted in the formation and eruption of an inverse S-shaped filament in NOAA active region (AR) 08858 from 2000 February 9 to 10. The sunspot had…

太阳与恒星天体物理 · 物理学 2015-06-05 X. L. Yan , Z. Q. Qu , D. F. Kong , C. L. Xu

We investigate the initiation and early evolution of 12 solar eruptions, including six active region hot channel and six quiescent filament eruptions, which were well observed by the \textsl{Solar Dynamics Observatory}, as well as by the…

太阳与恒星天体物理 · 物理学 2020-05-20 X. Cheng , J. Zhang , B. Kliem , T. {Török} , C. Xing , Z. J. Zhou , B. Inhester , M. D. Ding

Filaments, the dense cooler plasma floating in the solar corona supported by magnetic fields, generally exhibit certain activations before they erupt. In our previous study (Seki et al. 2017 ), we observed that the standard deviation of the…

太阳与恒星天体物理 · 物理学 2019-05-01 Daikichi Seki , Kenichi Otsuji , Hiroaki Isobe , Takako T. Ishii , Kiyoshi Ichimoto , Kazunari Shibata

Using the high-resolution observations from New Vacuum Solar Telescope (NVST) jointly with the Solar Dynamics Observatory data, we investigate two successive confined eruptions (Erup1 and Erup2) of a small filament in a decaying active…

太阳与恒星天体物理 · 物理学 2019-02-13 Huadong Chen , Ruisheng Zheng , Leping Li , Suli Ma , Yi Bi , Shuhong Yang

Both observations and simulations suggest that the solar filament eruption is closely related to magnetic flux emergence. It is thought that the eruption is triggered by magnetic reconnection between the filament and the emerging flux.…

太阳与恒星天体物理 · 物理学 2022-08-31 Leping Li , Hardi Peter , Lakshmi Pradeep Chitta , Hongqiang Song , Zhe Xu , Yongyuan Xiang

From vector measurements of the photospheric magnetic field with the SDO/HMI instrument, we studied the field variations within the 2011 June 7 eruptive event related to the filament eruption (FE), flare, and coronal mass ejection (CME). We…

太阳与恒星天体物理 · 物理学 2016-11-30 V. G. Fainshtein , Ya. I. Egorov , G. V. Rudenko

We present stereoscopic observations of six sequent eruptions of a filament in the active region NOAA 11045 on 2010 Feb 8, with the advantage of the STEREO twin viewpoints in combination with the earth viewpoint from SOHO instruments and…

太阳与恒星天体物理 · 物理学 2011-06-09 Yuandeng Shen , Yu Liu , Rui Liu

Solar filaments often erupt partially. Although how they split remains elusive, the splitting process has the potential of revealing the filament structure and eruption mechanism. Here we investigate the pre-eruption splitting of an…

太阳与恒星天体物理 · 物理学 2021-03-10 Hanya Pan , Rui Liu , Tingyu Gou , Bernhard Kliem , Yingna Su , Jun Chen , Yuming Wang

The dynamic properties of flare ribbons and the often associated filament eruptions can provide crucial information on the flaring coronal magnetic field. This Letter analyzes the GOES-class X1.0 flare on 2014 March 29…

太阳与恒星天体物理 · 物理学 2015-10-21 Chang Liu , Na Deng , Rui Liu , Jeongwoo Lee , Etienne Pariat , Thomas Wiegelmann , Yang Liu , Lucia Kleint , Haimin Wang

Flux emergence is crucial for the formation of solar active regions and triggering of various eruptions. However, the detailed mechanisms by which flux emergence drives these eruptions remain unclear and require numerical investigation.…

太阳与恒星天体物理 · 物理学 2025-06-18 Xiaohong Li , Yuhao Zhou , Rony Keppens

In the present work, we analyze a filament eruption associated with an ICME that arrived at L1 on August 5th, 2011. In multi-wavelength SDO/AIA images, three plasma parcels within the filament were tracked at high-cadence along the solar…

太阳与恒星天体物理 · 物理学 2018-06-27 Manan Kocher , Enrico Landi , Susan T. Lepri

Large solar flares and eruptions may influence remote regions through perturbations in the outer-atmospheric magnetic field, leading to causally related events outside of the primary or triggering eruptions that are referred to as…

太阳与恒星天体物理 · 物理学 2015-11-04 Carolus J. Schrijver , Paul A. Higgins

We present observations of the formation process of a small-scale filament on the quiet Sun during 5-6 February 2016 and investigate its formation cause. Initially, a small dipole emerged and its associated arch filament system was found to…

太阳与恒星天体物理 · 物理学 2018-07-04 Hechao Chen , Jiayan Yang , Bo Yang , Kaifan Ji , Yi Bi

We follow the eruption of two related intermediate filaments observed in H$\alpha$ (from GONG) and in EUV (from SDO/AIA) and the resulting large-amplitude longitudinal oscillations of the plasma in the filament channels. The events occurred…

太阳与恒星天体物理 · 物理学 2017-12-13 M. Luna , Y. Su , B. Schmieder , R. Chandra , T. A. Kucera

Magnetic fields emerging from the Sun's interior carry information about physical processes of magnetic field generation and transport in the convection zone. Soon after appearance on the solar surface the magnetic flux gets concentrated in…

太阳与恒星天体物理 · 物理学 2009-11-13 A. G. Kosovichev

An isolated and fast decayed active region (NOAA 9729) was observed when passing through solar disk. There is only one CME related with it that give us a good opportunity to investigate the whole process of the CME. Filament in this active…

太阳与恒星天体物理 · 物理学 2017-03-15 Shangbin Yang , Wenbin Xie , Jihong Liu

Using the observations from the Optical and Near-infrared Solar Eruption Tracer and the Solar Dynamics Observatory, we study an M5.7 flare in AR 11476 on 2012 May 10 and a micro-flare in the quiet Sun on 2017 March 23. Before the onset of…

太阳与恒星天体物理 · 物理学 2018-07-04 Shuhong Yang , Jun Zhang

Magnetic flux emergence is traditionally considered a key trigger of solar filament eruptions; however, its role in suppressing filament eruptions remains less understood. Using multi-wavelength observations from the Solar Dynamics…

太阳与恒星天体物理 · 物理学 2025-05-26 Chengrui Zhou , Yuandeng Shen , Chun Xia , Hao Liang , Zehao Tang , Dongxu Liu , Surui Yao

We study a granular-sized magnetic flux emergence event that occurred in NOAA 11024 in July 2009. The observations were made with the CRISP spectropolarimeter at the Swedish 1 m Solar Telescope achieving a spatial resolution of 0.14".…

太阳与恒星天体物理 · 物理学 2015-06-18 Ada Ortiz , Luis Bellot Rubio , Viggo Hansteen , Jaime de la Cruz Rodriguez , Luc Rouppe van der Voort

We present a formation process of a filament in active region NOAA 12574 during the period from 2016 August 11 to 12. Combining the observations of GONG H$\alpha$, Hida spectrum and SDO/AIA 304 A, the formation process of the filament is…

太阳与恒星天体物理 · 物理学 2018-08-29 Jincheng Wang , Xiaoli Yan , ZhongQuan Qu , Satoru UeNo , Kiyoshi Ichimoto , Linhua Deng , Wenda Cao , Zhong Liu