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Related papers: Plasmoid-mediated reconnection in solar UV bursts

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Observational and theoretical evidence suggest that beams of accelerated particles are produced in flaring events of all sizes in the solar atmosphere, from X-class flares to nanoflares. Current models of these types of particles in flaring…

Solar and Stellar Astrophysics · Physics 2020-10-28 L. Frogner , B. V. Gudiksen , H. Bakke

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.…

Solar and Stellar Astrophysics · Physics 2022-08-31 Leping Li , Hardi Peter , Lakshmi Pradeep Chitta , Hongqiang Song , Zhe Xu , Yongyuan Xiang

Simulations of relativistic plasmas traditionally focus on the dynamics of two-species mixtures of charged particles under the influence of external magnetic fields and those generated by particle currents. However, the extreme conditions…

We report multi-wavelength and multi-viewpoint observations of a solar eruptive event which involves loop-loop interactions. During a C2.0 flare, motions associated with inflowing and outflowing plasma provide evidence for ongoing magnetic…

Solar and Stellar Astrophysics · Physics 2016-04-27 Chunming Zhu , Rui Liu , David Alexander , R. T. James McAteer

Magnetic reconnection is a fundamental process in a laboratory, magnetospheric, solar and astrophysical plasma, whereby magnetic energy is converted into heat, bulk kinetic energy and fast particle energy. Its nature in two dimensions is…

Solar and Stellar Astrophysics · Physics 2021-06-09 Ting Li , Eric Priest , Ruilong Guo

We report on high-resolution imaging and spectral observations of eruptions of a spiral structure in the transition region, which were taken with the Interface Region Imaging Spectrometer (IRIS), the Atmospheric Imaging Assembly (AIA) and…

Solar and Stellar Astrophysics · Physics 2018-02-28 Zhenghua Huang , Lidong Xia , Chris J. Nelson , Jiajia Liu , Thomas Wiegelmann , Hui Tian , James A. Klimchuk , Yao Chen , Bo Li

In the solar corona, magnetic reconnection usually takes place at the singular configuration of magnetic field, in particular near a magnetic null owing to its high susceptibility to perturbations. In this Letter, we report a rare X-shaped…

Solar and Stellar Astrophysics · Physics 2015-06-19 J. Q. Sun , X. Cheng , Y. Guo , M. D. Ding , Y. Li

Space solar missions such as {\it Yohkoh} and {\it RHESSI} observe the hard X- and gamma-ray emission from energetic electrons in impulsive solar flares. Their energization mechanism, however, is unknown. In this paper, we suggest that the…

Astrophysics · Physics 2009-11-10 S. Tanuma , K. Shibata

We discuss how the model of magnetic reconnection in the presence of turbulence proposed inLazarian & Vishniac 1999 makes the reconnection rate independent either of resistivity or microscopic plasma effects, but determined entirely by the…

High Energy Astrophysical Phenomena · Physics 2013-02-15 A. Lazarian , Huirong Yan

A wide variety of phenomena such as gentle but persistent brightening, dynamic slender features (~100 km), and compact (~1'') ultraviolet (UV) bursts are associated with the heating of the solar chromosphere. High spatio-temporal resolution…

Solar and Stellar Astrophysics · Physics 2018-10-03 H. N. Smitha , L. P. Chitta , T. Wiegelmann , S. K. Solanki

Solar jets are collimated plasma ejections driven by magnetic reconnection, which play a critical role in the energy release and mass transport in the solar atmosphere. Using Solar Orbiter's Extreme Ultraviolet Imager (EUI) with its…

Solar and Stellar Astrophysics · Physics 2025-09-08 Song Tan , Alexander Warmuth , Frédéric Schuller , Yuandeng Shen , Jake A. J. Mitchell , Fanpeng Shi

Transition region explosive events are characterized by non-Gaussian profiles of the emission lines formed at transition region temperatures, and they are believed to be manifestations of small-scale reconnection events in the transition…

Solar and Stellar Astrophysics · Physics 2024-12-25 Yajie Chen , Hardi Peter , Damien Przybylski

We present results from X-ray imaging of high-aspect-ratio magnetic reconnection experiments driven at the National Ignition Facility. Two parallel, self-magnetized, elongated laser-driven plumes are produced by tiling 40 laser beams. A…

Coronal condensation and rain are a crucial part of the mass cycle between the corona and chromosphere. In some cases, condensation and subsequent rain originate in the magnetic dips formed during magnetic reconnection. This provides a new…

Solar and Stellar Astrophysics · Physics 2021-04-07 Leping Li , Hardi Peter , Lakshmi Pradeep Chitta , Hongqiang Song

We investigate the processes that lead to the formation, ejection and fall of a confined plasma ejection that was observed in a numerical experiment of the solar corona. By quantifying physical parameters such as mass, velocity, and…

Solar and Stellar Astrophysics · Physics 2015-05-28 P. Zacharias , H. Peter , S. Bingert

Ellerman bombs are regions with enhanced Balmer line wing emission and mark magnetic reconnection in the deep solar atmosphere in active regions and quiet Sun. They are often found in regions where opposite magnetic polarities are in close…

Solar and Stellar Astrophysics · Physics 2021-04-14 L. H. M. Rouppe van der Voort , J. Joshi , V. M. J. Henriques , S. Bose

We consider a simple model for gamma-ray bursts induced by magnetic reconnection in turbulent media. The magnetic field in a jet is subject to kink instabilities, which distort the regular structure of the spiral magnetic field, drive…

High Energy Astrophysical Phenomena · Physics 2019-09-25 Alex Lazarian , Bing Zhang , Siyao Xu

We perform a high-resolution two-dimensional fully-kinetic numerical simulation of a turbulent plasma system with observation-driven conditions, in order to investigate the interplay between turbulence, magnetic reconnection, and particle…

We analyze the characteristics of a quiescent polar prominence using the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). Initially, small-scale barb-like structures are evident on the solar disk, which…

Solar and Stellar Astrophysics · Physics 2020-12-09 Sudheer K. Mishra , Abhishek K. Srivastava , P. F. Chen

We investigated the dynamic evolution of a 3-dimensional (3D) flux rope eruption and magnetic reconnection process in a solar flare, by simply extending 2-dimensional (2D) resistive magnetohydrodynamic simulation model of solar flares with…

Solar and Stellar Astrophysics · Physics 2013-09-18 Keisuke Nishida , Naoto Nishizuka , Kazunari Shibata
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