[PDF] Top 20 On the characterization of magnetic reconnection in global MHD simulations

... of reconnection rate as the electric field parallel to an x-line is problematic in global MHD simulations for several reasons: the x-line itself may be hard to find in a non-trivial geometry ... See full document

... our simulations is the unsuitability of a discrete finite vol- ume grid for representing accurately the flow pattern occur- ring ...the reconnection region is fast and strongly inclined, having a large ... See full document

... (GEM) Magnetic Reconnection Challenge a two dimen- sional magnetic reconnection setup based on the Harris equilibrium was ...studied. Simulations were done using MHD models with ... See full document

... Runge-Kutta methods of order higher than 9 become imprac- tical because the coefficients can no longer be represented ac- curately, in double precision (REAL*8) computer arithmetic. The remaining choice is then the local ... See full document

... adjoint MHD code does not calculate the gradient very much faster than using difference quotients, it has the advantage that further parameters such as higher-order magnetic field moments or parameters of ... See full document

... all simulations un- dergo oscillatory reconnection, through which the system is able to ...in MHD and Hall MHD, plasma pressure is en- hanced at both ends of the initial current sheet, which ... See full document

... first global 3D MHD simulations of warp and den- sity waves in accretion disks excited by a rotating star with a misaligned dipole magnetic ... See full document

... netic reconnection determines the total amount of mass, mo- mentum, magnetic flux, and energy transport, an understand- ing of why magnetic reconnection ceases is of basic impor- tance to the ... See full document

... These simulations have shown that a complex interaction exists between the internal and external conditions on a reconnecting MHD ...the reconnection is governed by the plasma resistivity in all ... See full document

... The location of the AB is a trade-o€ between resolution and geometric distortions. If the AB is located at low altitude, 2 R E , say, then the distortions resulting from the fact that the magnetic ®eld is not ... See full document

... in magnetic reconnection, and also presents recent 3D particle simulations of coalescing magnetized flux ...toroidal magnetic field. Large time and space scale particle simulations show ... See full document

... kinetic reconnection corresponds to a bending of the magnetic field out of the reconnection ...finite magnetic field in the reconnection zone, called the B 6= 0 ...additional ... See full document

... cal simulations of decaying incompressible two-dimensional magnetohydrodynamics (MHD), it was found that in fully developed turbulence complex processes of reconnection lo- cally occur (Servidio et ... See full document

... ideal MHD simulations, which showed that current density enhancements of some factor of ten can be expected for reasonable electric field driving, and in the ab- sence of dissipation (Birn et ... See full document

... photospheric magnetic reconnection due to an encounter of oppositely directed vertical magnetic flux sheets, performing ...the magnetic Reynolds number = 1000) at a middle height of our ... See full document

... Such a set up will create the initial current sheet that will trigger magnetic reconnection. The magnetic energy released from this event will be converted into some kinetic energy, but mainly into ... See full document

... general magnetic reconnection within the framework of MHD just assumes an intrinsic 3D magnetic field in the reconnection region, our kinetic simulations of thin current sheets ... See full document

... from global magnetospheric simulations are compared with two-dimensional distributions of Birkeland currents at the topside ionosphere derived from magnetic field observa- tions by the constellation ... See full document

... Magnetic reconnection is a multi-scale phenomenon, in which micro-scale particle dynamics, macro-scale fluid and magnetic structure are ...tended MHD simulations are used ...such ... See full document

... Hall MHD simulations to investigate both the relationship between the global magnetic structure and the RR evolution, and some of the details of the RR dynam- ...of magnetic dissipation ... See full document