Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas
نویسندگان
چکیده
منابع مشابه
Formation of plasmoid chains in magnetic reconnection.
A detailed numerical study of magnetic reconnection in resistive MHD for very large, previously inaccessible, Lundquist numbers (10(4) <or= S <or= 10(8)) is reported. Large-aspect-ratio Sweet-Parker current sheets are shown to be unstable to super-Alfvénically fast formation of plasmoid (magnetic-island) chains. The plasmoid number scales as S(3/8) and the instability growth rate in the linear ...
متن کاملMeasurements of impulsive reconnection driven by nonlinear Hall dynamics
Related Articles Kinetic simulations of the structures of magnetic island in multiple X line guide field reconnection Phys. Plasmas 19, 042111 (2012) Numerical simulations of separatrix instabilities in collisionless magnetic reconnection Phys. Plasmas 19, 042110 (2012) Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas Phys. Plasmas 19, 042303 (2012) Magnetic...
متن کاملHigh Lundquist Number Resistive MHD Simulations of Magnetic Reconnection: Searching for Secondary Island Formation
Recently, secondary island formation due to the tearing instability of the Sweet-Parker current sheet was identified as a possible mechanism that can lead to fast reconnection (less sensitive dependence on Lundquist number S ) both in numerical simulations using Particle-in-Cell (PIC) method [Daughton et al. 2009], as well as using resistive magnetohydrodynamics (MHD) [Lapenta 2008; Bhattacharj...
متن کاملTI: High-Lundquist Number Resistive MHD Simulations of Turbulent Magnetic Reconnection with Secondary Island Formation and Enhanced Reconnection Rate
HR: 0800h AN: SM51C-1836 Poster TI: High-Lundquist Number Resistive MHD Simulations of Turbulent Magnetic Reconnection with Secondary Island Formation and Enhanced Reconnection Rate AU: *Ragunathan, S EM: [email protected] AF: Geophysical Institute, UAF, Fairbanks, AK, USA AU: Ng, C EM: [email protected] AF: Geophysical Institute, UAF, Fairbanks, AK, USA AB: We present our latest...
متن کاملPlasmoid-Induced-Reconnection and Fractal Reconnection
As a key to undertanding the basic mechanism for fast reconnection in solar flares, plasmoid-inducedreconnection and fractal reconnection are proposed and examined. We first briefly summarize recent solar observations that give us hints on the role of plasmoid (flux rope) ejections in flare energy release. We then discuss the plasmoid-induced-reconnection model, which is an extention of the cla...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2012
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.3703318