The following describes a list of errata in our paper, "A simple, analytical model of collisionless magnetic reconnection in a pair plasma." It supersedes an earlier erratum. We recently discovered an error in the derivation of the outflow-to-inflow density ratio.

Topics: NASA Technical Reports Server (NTRS), MAGNETIC FIELD RECONNECTION, MATHEMATICAL MODELS, CORRECTION,...

Collisionless magnetic reconnection is often associated with time-dependent behavior. Specifically, current layers in the diffusion region can become unstable to tearing-type instabilities on one hand, or to instabilities with current-aligned wave vectors on the other. In the former case, the growth of tearing instabilities typically leads to the production of magnetic islands, which potentially provide feedback on the reconnection process itself, as well as on the rate of reconnection. The...

Topics: NASA Technical Reports Server (NTRS), MAGNETIC FIELD RECONNECTION, STABILITY, TEARING, TIME...

Magnetic reconnection is arguably the most effective energy conversion and transport process in plasmas. Reconnection is subject to topological considerations in two ways. First, the process itself involves a change in topology of the combined plasma-magnetic field system. This change in topology transcends that of the magnetic field alone and accounts for flux transport relative to the motion of the plasma in the system under investigation. The second way topology is important to magnetic...

Topics: NASA Technical Reports Server (NTRS), MAGNETIC FIELD RECONNECTION, ENERGY CONVERSION, TRANSPORT...

A set of conservation equations is utilized to derive balance equations in the reconnection diffusion region of a symmetric pair plasma. The reconnection electric field is assumed to have the function to maintain the current density in the diffusion region, and to impart thermal energy to the plasma by means of quasi-viscous dissipation. Using these assumptions it is possible to derive a simple set of equations for diffusion region parameters in dependence on inflow conditions and on plasma...

Topics: NASA Technical Reports Server (NTRS), CONSERVATION EQUATIONS, DIFFUSION, MAGNETIC FIELD...

Asymmetric reconnection is being investigated by means of particle-in-cell simulations. The research has two foci: The direction of the reconnection line in configurations with nonvanishing magnetic fields; and the question why reconnection can be faster if a guide field is added to an otherwise unchanged asymmetric configuration. We find that reconnection prefers a direction, which maximizes the available magnetic energy, and show that this direction coincides with the bisection of the angle...

Topics: NASA Technical Reports Server (NTRS), MAGNETIC FIELD RECONNECTION, ASYMMETRY, SOLAR MAGNETIC FIELD,...

Depending on the specific situation, magnetic reconnection may involve symmetric or asymmetric inflow regions. Asymmetric reconnection applies, for example, to reconnection at the Earth's magnetopause, whereas reconnection in the nightside magnetotail tends to involve more symmetric geometries. A combination of review and new results pertaining to magnetic reconnection is being presented. The focus is on three aspects: A basic, MHD-based, analysis of the role magnetic reconnection plays in the...

Topics: NASA Technical Reports Server (NTRS), MAGNETIC FIELD RECONNECTION, MAGNETOHYDRODYNAMICS, TIME...

A review of present understanding of the dissipation region in magnetic reconnection is presented. The review focuses on results of the thermal inertia-based dissipation mechanism but alternative mechanisms are mentioned as well. For the former process, a combination of analytical theory and numerical modeling is presented. Furthermore, a new relation between the electric field expressions for anti-parallel and guide field reconnection is developed.

Topics: NASA Technical Reports Server (NTRS), MAGNETIC FIELD RECONNECTION, PLASMA INTERACTIONS, SPACE...