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We present a new method for determining the column density of erupting filament material using state-of-the-art multi-wavelength imaging data. Much of the prior work on filament/prominence structure can be divided between studies that use a…

Solar and Stellar Astrophysics · Physics 2013-02-12 David R Williams , Deborah Baker , Lidia van Driel-Gesztelyi

We present an investigation of partial filament eruption on 2012 June 17 in the active region NOAA 11504. For the first time, we observed the vertical splitting process during the partial eruption with high resolution narrow band images at…

Solar and Stellar Astrophysics · Physics 2022-04-27 Jun Dai , Zhentong Li , Ya Wang , Zhe Xu , Yanjie Zhang , Leping Li , Qingmin Zhang , Yingna Su , Haisheng Ji

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…

Solar and Stellar Astrophysics · Physics 2019-02-13 Huadong Chen , Ruisheng Zheng , Leping Li , Suli Ma , Yi Bi , Shuhong Yang

Using multi-instrument and multi-wavelength observations, we studied a CME eruption that led to intense geomagnetic storm on 23 April 2023. The eruption occurred on April 21 in solar active region 13283 near the disk-center. The AR was in…

Solar and Stellar Astrophysics · Physics 2023-12-15 P. Vemareddy

The separation of a filament and sigmoid is observed during an X1.4 flare on July 12, 2012 in solar active region 11520, but the corresponding magnetic field change is not clear. We construct a data-constrained magnetohydrodynamic…

Solar and Stellar Astrophysics · Physics 2022-11-30 Tie Liu , Yuhong Fan , Yingna Su , Yang Guo , Ya Wang , Haisheng Ji

Sympathetic eruptions of two solar filaments have been studied for several decades, but the detailed physical process through which one erupting filament triggers another is still under debate. Here we investigate a sympathetic event…

Solar and Stellar Astrophysics · Physics 2020-08-26 Y. J. Hou , T. Li , Z. P. Song , J. Zhang

We present observations and modeling results of the propagation and impact at Earth of a high-latitude, extended filament channel eruption that commenced on 2015 July 9. The coronal mass ejection (CME) that resulted from the filament…

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.…

Solar and Stellar Astrophysics · Physics 2015-06-12 B. Schmieder , P. Demoulin , G. Aulanier

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…

Solar and Stellar Astrophysics · Physics 2019-05-01 Daikichi Seki , Kenichi Otsuji , Hiroaki Isobe , Takako T. Ishii , Kiyoshi Ichimoto , Kazunari Shibata

We study the formation and evolution of a failed filament eruption observed in NOAA active region 11121 near the southeast limb on November 6, 2010. We use a time series of SDO/AIA 304, 171, 131, 193, 335, 94 {\AA} images, SDO/HMI…

Solar and Stellar Astrophysics · Physics 2015-06-15 D. Kuridze , M. Mathioudakis , A. F Kowalski , P. H. Keys , D. B. Jess , K. S. Balasubramaniam , F. P. Keenan

We observe a coronal jet around 22:08 UT on 23 rd March of 2017, in a quiet region towards the north-east of the solar disk. A minifilament eruption leads to this jet. We analyze dynamics of the minifilament from its formation until its…

Solar and Stellar Astrophysics · Physics 2019-05-15 Rakesh Mazumder

We present observations of the eruption and then reformation of a filament caused by its nearby emerging magnetic flux. Driven by the emerging magnetic flux, the emerged positive fluxes moved toward and cancelled with its nearby negative…

Solar and Stellar Astrophysics · Physics 2019-04-03 Bo Yang , Huadong Chen

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…

Solar and Stellar Astrophysics · Physics 2021-03-10 Hanya Pan , Rui Liu , Tingyu Gou , Bernhard Kliem , Yingna Su , Jun Chen , Yuming Wang

Magnetic flux ropes are a key component of coronal mass ejections, forming the core of these eruptive phenomena. However, determining whether a flux rope is present prior to eruption onset and, if so, the rope's handedness and the number of…

We present rapid-cadence Transition Region And Coronal Explorer (TRACE) observations which show evidence of a filament eruption from active region NOAA 10696, accompanied by an X2.5 flare, on 2004 November 10. The eruptive filament, which…

Astrophysics · Physics 2009-11-13 D. R. Williams , T. Toeroek , P. Demoulin , L. van Driel-Gesztelyi , B. Kliem

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

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…

Solar and Stellar Astrophysics · Physics 2017-02-08 Y. Li , X. Sun , M. D. Ding , J. Qiu , E. R. Priest

We present the multi-wavelength observations of asymmetric filament eruption, associated CME and coronal downflows on 2012 June 17-18 during 20:00-05:00 UT. We use SDO/AIA, STEREO-B/SECCHI observations to understand the filament eruption…

Solar and Stellar Astrophysics · Physics 2015-06-15 N. C. Joshi , A. K. Srivastava , B. Filippov , W. Uddin , P. Kayshap , R. Chandra

We describe and analyze observations by the Solar Dynamics Observatory of the emergence of a small, bipolar active region within an area of unipolar magnetic flux that was surrounded by a circular, quiescent filament. Within only eight…

Solar and Stellar Astrophysics · Physics 2018-08-08 Sally Dacie , Tibor Torok , Pascal Demoulin , Mark Linton , Cooper Downs , Lidia van Driel-Gesztelyi , David Long , James Leake
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