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Magnetic flux ropes (MFRs), sets of coherently twisted magnetic field lines, are believed as core structures of various solar eruptions. Their evolution plays an important role to understand the physical mechanisms of solar eruptions, and…

Solar and Stellar Astrophysics · Physics 2023-01-11 Ruisheng Zheng , Yihan Liu , Liang Zhang , Yang Liu , Changhui Rao , Qing Lin , Zhimao Du , Libo Zhong , Huadong Chen , Yao Chen

Interfaces between hot and cold magnetized plasmas exist in various astrophysical contexts, for example where hot outflows impinge on an ambient interstellar medium (ISM). It is of interest to understand how the structure of the magnetic…

Solar and Stellar Astrophysics · Physics 2015-05-30 Shule Li , Adam Frank , Eric Blackman

We study the triggering mechanism of a limb-prominence eruption and the associated coronal mass ejection near AR 12342 using SDO and LASCO/SOHO observations. The prominence is seen with an embedded flux thread (FT) at one end and bifurcates…

Solar and Stellar Astrophysics · Physics 2017-11-29 P. Vemareddy , N. Gopalswamy , B. Ravindra

We present a new model of magnetic reconnection in the presence of turbulence, applicable when the magnetic helicity is non-zero. The new model differs from the Lazarian-Vishniac turbulent reconnection theory by emphasizing the role of…

Plasma Physics · Physics 2025-01-22 Alexander J. B. Russell

A 3D simulation of a non-relativistic, magnetically driven jet propagating in a stratified atmosphere is presented, covering about three decades in distance and two decades in sideways expansion. The simulation captures the jet acceleration…

High Energy Astrophysical Phenomena · Physics 2015-05-13 R. Moll

At this time there does not exist a robust set of rules connecting low and high $\beta$ waves across the $\beta \approx 1$ layer. The work here contributes specifically to what happens when a low $\beta$ fast wave crosses the $\beta \approx…

Astrophysics · Physics 2008-11-26 J. A. McLaughlin , A. W. Hood

A first-principle study of diffusion in a strongly coupled one-component plasma in a magnetic field B is presented. As in a weakly coupled plasma, the diffusion coefficient perpendicular to the field exhibits a Bohm-like 1/B-behavior in the…

Plasma Physics · Physics 2011-12-30 T. Ott , M. Bonitz

We present experimental data providing evidence for the formation of transient ($\sim 20~\mu$s) plasmas that are simultaneously weakly magnetized (i.e., Hall magnetization parameter $\omega \tau > 1$) and dominated by thermal pressure…

Plasma Physics · Physics 2021-02-17 T. Byvank , D. A. Endrizzi , C. B. Forest , S. J. Langendorf , K. J. McCollam , S. C. Hsu

A toroidal, quasi-linear model is proposed to study the penetration dynamics of the resonant magnetic perturbation (RMP) field into the plasma. The model couples the linear, fluid plasma response to a toroidal momentum balance equation,…

Plasma Physics · Physics 2013-05-17 Yueqiang Liu , A. Kirk , Y. Sun

We present the results of three-dimensional global magnetohydrodynamic (MHD) simulations of the Parker-shearing instability in a differentially rotating torus initially threaded by toroidal magnetic fields. An equilibrium model of…

Astrophysics · Physics 2009-10-31 M. Machida , MITSURU R. Hayashi , R. Matsumoto

Magnetic flux distribution across a high-temperature superconductor strip is measured using magneto-optical imaging at 15 K. Both the current-carrying state and the remanent state after transport current are studied up to the currents 0.97…

A technique of magnetized plasma simulation have been implemented into a well known FDTD solver MEEP as a child class of "susceptibility" class. Magnetized plasma posses gyrotrophic properties, polarization vector is being rotated while the…

Computational Physics · Physics 2018-12-11 Aleksandr Friman

There is evidence for coronal plasma flows to break down into fragments and to be laminar. We investigate this effect by modeling flows confined along magnetic channels. We consider a full MHD model of a solar atmosphere box with a dipole…

Solar and Stellar Astrophysics · Physics 2017-12-27 A. Petralia , F. Reale , P. Testa

The Earth's magnetosphere represents a natural plasma laboratory that allows us to study the behavior of particle distribution functions in the absence of Coulomb collisions, typically described by the Kappa distributions. We have…

Space Physics · Physics 2021-03-24 Adetayo V. Eyelade , Marina Stepanova , Cristobal M. Espinoza , Pablo S. Moya

Using two-dimensional hybrid-kinetic simulations, we explore the nonlinear "interruption" of standing and traveling shear-Alfv\'en waves in collisionless plasmas. Interruption involves a self-generated pressure anisotropy removing the…

Plasma Physics · Physics 2017-12-14 J. Squire , M. W. Kunz , E. Quataert , A. A. Schekochihin

Coronal mass ejections (CMEs) are powerful drivers of space weather, with magnetic flux ropes (MFRs) widely regarded as their primary precursors. However, the variation in reconnection flux during the evolution of MFR during CME eruptions…

Solar and Stellar Astrophysics · Physics 2026-04-16 Samriddhi Sankar Maity , Piyali Chatterjee , Ranadeep Sarkar , Ijas S. Mytheen

Transient interaction of magnetic dipole with plasma flow carrying southward magnetic field is studied in laboratory experiment. The flow with transverse frozen-in field is generated by means of laser-produced plasma cross-field expansion…

Plasmoid growth is considered to enhance the rate of magnetic reconnection and is frequently used to explain fast mag netic reconnection in highly conductive (collisionless) plasmas. In strongly magnetized plasmas, the long wavelength…

Plasma Physics · Physics 2026-03-09 F. F. Locker , M. Rinner , M. Held , A. Kendl

Twisted magnetic fields should be ubiquitous in flare-producing active regions where the magnetic fields are strongly non-potential. It has been shown that reconnection in helical magnetic coronal loops results in plasma heating and…

Solar and Stellar Astrophysics · Physics 2016-01-20 R. F. Pinto , M. Gordovskyy , P. K. Browning , N. Vilmer

We present the Solar Dynamics Observatory observations of two flux ropes respectively tracked out by material from a surge and a failed filament eruption on 2012 July 29 and August 04. For the first event, the interaction between the…

Solar and Stellar Astrophysics · Physics 2019-08-19 Ting Li , Jun Zhang