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Related papers: Line-Tied Flux Rope Relaxation and Reconnection: A…

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We investigate the magnetic reconnection in an MHD simulation of a coronal magnetic flux rope (MFR) confined by a helmet streamer, where a prominence-cavity system forms. This system includes a hot cavity surrounding a prominence with…

Solar and Stellar Astrophysics · Physics 2021-07-14 Tie Liu , Yingna Su

We discuss some aspects of magnetic reconnection which could help in understanding many aspects of magnetic plasma interactions. We will show that the helical structure often observed in polar jets is a natural consequence of magnetic…

Solar and Stellar Astrophysics · Physics 2015-05-27 Ehsan Tavabi , Serge Koutchmy , Ali Ajabshirizadeh

During magnetic reconnection in collisionless space plasma, the electron fluid decouples from the magnetic field within narrow current layers, and theoretical models for this process can be distinguished in terms of their predicted current…

Recent progress in understanding the physics of magnetic reconnection is conveniently summarized in terms of a phase diagram which organizes the essential dynamics for a wide variety of applications in heliophysics, laboratory and…

Instrumentation and Methods for Astrophysics · Physics 2015-05-30 Hantao Ji , William Daughton

How energy is converted into thermal energy in weakly collisional and collisionless plasma processes such as magnetic reconnection and plasma turbulence has recently been the subject of intense scrutiny. The pressure-strain interaction has…

Plasma Physics · Physics 2023-05-31 M. Hasan Barbhuiya , Paul A. Cassak

Multiwavelength observations of the propagating disturbances (PDs), discovered by Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO), are analyzed to determine its driving mechanism and physical nature. Two magnetic…

Flux emergence is ubiquitous in the Sun's lower atmosphere, where the emerging magnetic flux can reconnect with the pre-existing magnetic field. We investigate plasmoid formation and the resulting multi-thermal emissions during…

Solar and Stellar Astrophysics · Physics 2025-08-18 Guanchong Cheng , Lei Ni , Robert Cameron , Hardi Peter , Yajie Chen , Jun Lin

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 study the magnetic reconnection during a flare by investigating flare ribbon dynamics using observations and data-constrained magnetohydrodynamics (MHD) simulation. In particular, we estimate the reconnection flux and the reconnection…

Solar and Stellar Astrophysics · Physics 2025-05-19 Sushree S Nayak , Qiang Hu , Wen He , Sanjay Kumar , Ramit Bhattacharyya

Magnetic reconnection drives a wide range of astrophysical plasma phenomena, including solar flares, by converting magnetic energy into plasma energy through changes in magnetic field topology. Petschek reconnection is a magnetohydrodynamic…

Solar and Stellar Astrophysics · Physics 2026-04-01 Keita Akutagawa , Shinsuke Imada , Munehito Shoda

Magnetic reconnection is thought to be the driver for many explosive phenomena in the universe. The energy release and particle acceleration during reconnection have been proposed as a mechanism for producing high-energy emissions and…

High Energy Astrophysical Phenomena · Physics 2015-04-10 Fan Guo , Yi-Hsin Liu , William Daughton , Hui Li

We present the results of a set of three-dimensional numerical simulations of magnetic flux emergence from below the photosphere into the corona that include a uniform and horizontal coronal magnetic field mimicking a pre-existing…

Astrophysics · Physics 2009-11-10 K. Galsgaard , F. Moreno-Insertis , V. Archontis , A. Hood

The magnetic configuration hosting prominences and their surrounding coro- nal structure is a key research topic in solar physics. Recent theoretical and observational studies strongly suggest that a helical magnetic flux rope is an es-…

Solar and Stellar Astrophysics · Physics 2015-06-18 Chun Xia , Rony Keppens , Yang Guo

There are currently no three dimensional numerical models which describe the magnetic and energetic formation of prominences self-consistently. Consequently, there has not been significant progress made in understanding the connection…

Solar and Stellar Astrophysics · Physics 2015-06-17 Donald Schmit , Sarah Gibson

Context: The majority of studies on stressed 3D magnetic null points consider magnetic reconnection driven by an external perturbation, but the formation of a genuine current sheet equilibrium remains poorly understood. This problem has…

Solar and Stellar Astrophysics · Physics 2012-09-07 Jorge Fuentes-Fernandez , Clare E. Parnell

Two-dimensional relativistic particle-in-cell (PIC) simulations of radiative magnetic reconnection in pair plasmas with multiple interacting current sheets are carried out to mimic the dynamics in high-energy astrophysical environments,…

Energy dissipation in collisionless plasmas is one of the most outstanding open questions in plasma physics. Magnetic reconnection and turbulence are two phenomena that can produce the conditions for energy dissipation. These two phenomena…

The ubiquitous turbulence in astrophysical plasmas is important for both magnetic reconnection and reconnection acceleration. We study the particle acceleration during fast 3D turbulent reconnection with reconnection-driven turbulence.…

Plasma Physics · Physics 2023-01-11 Siyao Xu , Alex Lazarian

The dynamics of a plasmoid chain is studied with three dimensional Particle-in-Cell simulations. The evolution of the system with and without a uniform guide field, whose strength is 1/3 the asymptotic magnetic field, is investigated. The…

The nonlinear evolution of relativistic magnetic reconnection in sheared magnetic configuration (with a guide field) is investigated by using two-dimensional relativistic two-fluid simulations. Relativistic guide field reconnection features…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Seiji Zenitani , Michael Hesse , Alex Klimas