Results 101 to 110 of about 1,069,804 (194)

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

open access: yesThe 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   +4 more
doaj   +1 more source

The Eruptive Duality of a Filament on 2023 April 21

open access: yesThe 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

Maximum warning times for imminent volcanic eruptions [PDF]

open access: yes, 2005
Accelerations in seismicity are important precursors to eruptions at volcanoes reawakening after extended repose intervals. These have previously been quantified for subduction-zone settings in terms of the linkage of crustal faults by shearing ...
Sammonds, PR, Kilburn, CRJ
core  

Observations and Magnetohydrodynamic Simulation of External Reconnection Resulting in a Failed Filament Eruption

open access: yesThe Astrophysical Journal
Failed filament eruptions have been reported previously; however, the responsible physical mechanisms remain debated. Using multiwavelength data from Solar Orbiter and Solar Dynamics Observatory, we analyze a failed filament eruption on 2024 March 19 ...
Yue Fang   +5 more
doaj   +1 more source

Simple Model for Temporal Variations of Hα Spectrum by an Eruptive Filament from a Superflare on a Solar-type Star

open access: yesThe Astrophysical Journal
Flares are intense explosions on the solar and stellar surfaces, and solar flares are sometimes accompanied by filament or prominence eruptions. Recently, a large filament eruption associated with a superflare on a solar-type star EK Dra was discovered ...
Kai Ikuta, Kazunari Shibata
doaj   +1 more source

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

open access: yesThe 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   +13 more
doaj   +1 more source

Dynamics of An Erupting Filament and a Coronal Loop during Their Interaction

open access: yesThe Astrophysical Journal
Although interactions between filaments and other atmospheric structures are frequently observed, detailed studies on how these interactions affect the dynamics of the involved structures remain scarce.
Yue Fang   +3 more
doaj   +1 more source

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

open access: yesUniverse
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

open access: yesThe 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   +6 more
doaj   +1 more source

Radio dimming associated with filament eruptions in the meter and decimeter wavebands

open access: yes
Filament eruptions are considered to be a common phenomenon on the Sun and other stars, yet they are rarely directly imaged in the meter and decimeter wavebands.
Jingye Yan   +14 more
core   +1 more source

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