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We present the results of numerical simulations of wave-induced magnetic reconnection in a model of the solar atmosphere. In the magnetic field geometry we study in this article, the waves, driven by a monochromatic piston and a driver…

太阳与恒星天体物理 · 物理学 2009-08-11 L. Heggland , B. De Pontieu , V. H. Hansteen

Solar radio bursts exhibit complex fine structures that reveal intricate coronal plasma dynamics. Here, we report detection of spike-like repeating burst pairs, characterized by two short-lived (0.1-2 s), narrowband components separated by…

太阳与恒星天体物理 · 物理学 2026-05-28 Suli Ma , Eduard P. Kontar , Daniel L. Clarkson , Huadong Chen , Yihua Yan

Using simulated data-driven three-dimensional resistive MHD simulations of the solar atmosphere, we show that magnetic reconnection can be responsible of the formation of jets with characteristic of Type II spicules. For this, we…

太阳与恒星天体物理 · 物理学 2018-04-06 J. J. González-Avilés , F. S. Guzmán , V. Fedun , G. Verth , S. Shelyag , S. Regnier

An integrated Magneto-Fluid model, that accords full treatment to the Velocity fields associated with the directed plasma motion, is developed to investigate the dynamics of coronal structures. It is suggested that the interaction of the…

等离子体物理 · 物理学 2009-11-06 Swadesh M. Mahajan , Ryszard Miklaszewski , Kommunela I. Nikol'skaya , Nana L. Shatashvili

Turbulence, magnetic reconnection, and shocks can be present in explosively unstable plasmas, forming a new electromagnetic environment, which we call here turbulent reconnection, and where spontaneous formation of current sheets takes…

高能天体物理现象 · 物理学 2018-11-28 Loukas Vlahos , Heinz Isliker

Transient collimated plasma eruptions in the solar corona, commonly known as coronal (or X-ray) jets, are among the most interesting manifestations of solar activity. It has been suggested that these events contribute to the mass and energy…

太阳与恒星天体物理 · 物理学 2017-08-09 R. Lionello , T. TÖrÖk , V. S. Titov , J. E. Leake , Z. MikiĆ , J. A. Linker , M. G. Linton

The solar corona is highly structured by bunches of magnetic field lines forming either loops, or twisted flux ropes representing prominences/filaments, or very dynamic structures such as jets. The aim of this paper is to understand the…

太阳与恒星天体物理 · 物理学 2024-12-13 Garima Karki , Brigitte Schmieder , Pooja Devi , Ramesh Chandra , Nicolas Labrosse , Reetika Joshi , Bernard Gelly

Using numerical simulations, we study the effects of magnetic resistivity and thermal conductivity in the dynamics and properties of solar jets with characteristics of Type II spicules and cool coronal jets. The dynamic evolution of the…

太阳与恒星天体物理 · 物理学 2020-07-15 J. J. González-Avilés , F. S. Guzmán , V. Fedun , G. Verth

Su et al. 2012 proposed a new explanation for filament formation and eruption, where filament barbs are rotating magnetic structures driven by underlying vortices on the surface. Such structures have been noticed as tornado-like prominences…

太阳与恒星天体物理 · 物理学 2015-06-18 Yang Su , Peter Gömöry , Astrid Veronig , Manuela Temmer , Tongjiang Wang , Kamalam Vanninathan , Weiqun Gan , Youping Li

Magnetic flux ropes are characterized by coherently twisted magnetic field lines, which are ubiquitous in magnetized plasmas. As the core structure of various eruptive phenomena in the solar atmosphere, flux ropes hold the key to…

太阳与恒星天体物理 · 物理学 2021-06-10 Rui Liu

We present an observational study of the plasma dynamics at the base of a solar coronal jet, using high resolution extreme ultraviolet imaging data taken by the Extreme Ultraviolet Imager on board Solar Orbiter, and by the Atmospheric…

Solar prominences are cool and dense plasma structures floating in the hot solar corona. They are ubiquitous features in the solar atmosphere, but their formation mechanism is still unclear. Here we perform comprehensive fully…

太阳与恒星天体物理 · 物理学 2026-05-04 Lisa-Marie Zessner , Robert H. Cameron , Sami K. Solanki , Damien Przybylski

Recent observations from Parker Solar Probe have revealed that the solar wind has a highly variable structure. How this complex behaviour is formed in the solar corona is not yet known, since it requires omnipresent fluctuations, which…

Solar jets are impulsive, collimated plasma ejections that are triggered by magnetic reconnection. They are observed for many decades in various temperatures and wavelengths, therefore their kinematic characteristics, such as velocity and…

太阳与恒星天体物理 · 物理学 2022-08-17 Brigitte Schmieder , Reetika Joshi , Ramesh Chandra

Solar "magnetic tornadoes" are produced by rotating magnetic field structures that extend from the upper convection zone and the photosphere to the corona of the Sun. Recent studies show that such rotating features are an integral part of…

太阳与恒星天体物理 · 物理学 2017-05-24 Yoshiaki Kato , Sven Wedemeyer

A solar filament is a dense cool condensation that is supported and thermally insulated by magnetic fields in the rarefied hot corona. Its evolution and stability, leading to either an eruption or disappearance, depend on its coupling with…

太阳与恒星天体物理 · 物理学 2019-07-04 L. P. Chitta , H. Peter , L. Li

Context. Ubiquitous small-scale vortical motions are seen to occur in the solar atmosphere both in simulations and observations. They are thought to play a significant role in the local heating of the quiet chromosphere and corona. In a…

太阳与恒星天体物理 · 物理学 2023-12-25 J. R. Canivete Cuissa , O. Steiner

Intensity bursts in ultraviolet (UV) to X-ray wavelengths and plasma jets are typical signatures of magnetic reconnection and the associated impulsive heating of the solar atmospheric plasma. To gain new insights into the process,…

太阳与恒星天体物理 · 物理学 2021-12-15 L. P. Chitta , S. K. Solanki , H. Peter , R. Aznar Cuadrado , L. Teriaca , U. Schühle , F. Auchère , D. Berghmans , E. Kraaikamp , S. Gissot , C. Verbeeck

Propagating (intensity) disturbances (PDs) are well reported in observations of coronal loops and polar plumes in addition to recent links with co-temporal spicule activity in the solar atmosphere. However, despite being reported in…

太阳与恒星天体物理 · 物理学 2024-09-11 Samuel Skirvin , Tanmoy Samanta , Tom Van Doorsselaere

Vortex flows have been found in the photosphere, chromosphere and low corona in observations and simulations. It has been suggested that vortices play an important role for channeling energy and plasma into the corona, but the impact of…

太阳与恒星天体物理 · 物理学 2023-07-05 C. Breu , H. Peter , R. Cameron , S. K. Solanki