Results 91 to 100 of about 11,117 (189)

The Noneruptive Reconfiguration of a Quiescent Filament After a Nearby Active Region Emergence

The Astrophysical Journal
The unpredictability of solar filament eruptions presents major challenges for forecasting space weather, since such eruptions frequently drive coronal mass ejections that impact the heliosphere.
James McKevitt, Louise Harra, Gherardo Valori, Deborah Baker, Nils Janitzek, Stephanie Yardley, Sarah Matthews, Hamish A. S. Reid, Alexander W. James, Muriel Stiefel, David H. Brooks, Ryan M. Dewey, Jim M. Raines, Susan T. Lepri, Liang Zhao, Juan Sebastián Castellanos Durán   +15 more
doaj   +1 more source

Mystery behind the Peeling of a Filament and the Associated Sudden Disappearance of a Sunspot Penumbra

The Astrophysical Journal Letters
On 2024 July 25, while observing the solar active region NOAA 13762 with the high-resolution 1.6 m Goode Solar Telescope at the Big Bear Solar Observatory, we witnessed two mysterious phenomena: the partial detachment of filament strands from its main ...
Ju Jing, Mia Mancuso, Satoshi Inoue, Jeongwoo Lee, Qin Li, Wen He, Yan Xu, Wenda Cao, Haimin Wang   +8 more
doaj   +1 more source

Investigating an Erupting Metric-decimetric Radio Depression and Its Physical Origin

The Astrophysical Journal
We present direct metric-decimetric radio imaging observations of a fascinating quiescent filament eruption on 2024 March 17 using data from the DAocheng Radio Telescope, with a combination of the Solar Dynamics Observatory and the Chinese H α Solar ...
B. T. Wang, X. Cheng, J. Y. Yan, C. Xing, W. T. Fu, L. Wu, L. Deng, A. L. Lan, Y. Chen, C. Wang, M. D. Ding   +10 more
doaj   +1 more source

Rotation of a Solar Jet Driven by Plasma Flow along Helical Magnetic Fields in an Active Region

The Astrophysical Journal
Solar jets, collimated plasma ejections driven by magnetic reconnection, play a vital role in energy transport and coronal heating. While rotational motions in jets are often attributed to magnetic field untwisting, alternative explanatory mechanisms ...
Lei Huang, Yang Guo, Zhen Li, Jinhan Guo, Mingde Ding   +4 more
doaj   +1 more source

Filament Eruptions Outside of Active Regions as Sources of Large Solar Energetic Particle Events

, 2016
Gradual solar energetic (E > 10 MeV) particle (SEP) events are produced in shocks driven by fast CMEs, which are nearly always spatially associated with ARs.
S. Kahler, N. Gopalswamy, P. Makela, S. Akiyama, S. Yashiro, Hong Xie, N. Thakur   +6 more
semanticscholar   +1 more source

The Eruptive Duality of a Filament on 2023 April 21

The Astrophysical Journal
Here we study a filament eruption on 2023 April 21. The filament was composed of two segments, named S1 and S2. Initially, the brightening and bidirectionally plasmoid flows appeared inside S1, and then the west part of S1 (WS1) experienced rapid rising ...
Yue Fang, Jun Zhang
doaj   +1 more source

Observations of a Two-sided Loop Jet and Magnetic Reconnection Involving a Medium-scale Filament Eruption

The Astrophysical Journal
Although multiscale filament eruptions serve as significant triggers for various energetic release processes in the solar atmosphere, the underlying mechanisms remain elusive.
Liping Yang, Xiaoli Yan, Jincheng Wang, Jinhan Guo, Qingmin Zhang, Liheng Yang, Dong Li, Ye Qiu, Qiaoling Li, Guanchong Cheng, Xinsheng Zhang, Guotang Wu, Zongyin Wu, Qifan Dong   +13 more
doaj   +1 more source

Automated High-Precision Recognition of Solar Filaments Based on an Improved U²-Net

Universe
Solar filaments are a significant solar activity phenomenon, typically observed in full-disk solar observations in the H-alpha band. They are closely associated with the magnetic fields of solar active regions, solar flare eruptions, and coronal mass ...
Wendong Jiang, Zhengyang Li
doaj   +1 more source

Study of the Orientation of Erupting Magnetic Flux Ropes in Coronal Mass Ejections from the Solar Corona to 1 au

The Astrophysical Journal
The southward component of the interplanetary magnetic field, often originating from solar coronal mass ejections (CMEs), plays a crucial role in driving geomagnetic storms. Accurate prediction of the flux rope orientation of CMEs as they arrive at Earth
Ying Wang, Yu Chen, Bin Zhuang, Yan Xu, Tingyu Gou, Nian liu, Haimin Wang   +6 more
doaj   +1 more source

Ultra-high-resolution observations of persistent null-point reconnection in the solar corona. [PDF]

Nat Commun, 2023
Cheng X, Priest ER, Li HT, Chen J, Aulanier G, Chitta LP, Wang YL, Peter H, Zhu XS, Xing C, Ding MD, Solanki SK, Berghmans D, Teriaca L, Aznar Cuadrado R, Zhukov AN, Guo Y, Long D, Harra L, Smith PJ, Rodriguez L, Verbeeck C, Barczynski K, Parenti S.   +23 more
europepmc   +1 more source