Тип публикации: статья из журнала
Год издания: 2009
Ключевые слова: Space plasma physics, Kinetic and MHD theory, Magnetic reconnection
Аннотация: Magnetic reconnection is believed to be responsible for various explosive processes in the space plasma including magnetospheric substorms. The Hall effect is proved to play a key role in the reconnection process. An analytical model of steady-state magnetic reconnection in a collision-less incompressible plasma is developed using Показать полностьюthe electron Hall MHD approximation. It is shown that the initial complicated system of equations may split into a system of independent equations, and the solution of the problem is based on the Grad-Shafranov equation for the magnetic potential. The results of the analytical study are further compared with a two-dimensional particle-in-cell simulation of reconnection. It is shown that both methods demonstrate a close agreement in the electron current and the magnetic and electric field structures obtained. The spatial scales of the acceleration region in the simulation and the analytical study are of the same order. Such features like particles trajectories and the in-plane electric field structure appear essentially similar in both models.
Журнал: ANNALES GEOPHYSICAE
Выпуск журнала: Vol. 27, Is. 3
Номера страниц: 905-911
ISSN журнала: 09927689
Место издания: GOTTINGEN
Издатель: COPERNICUS GESELLSCHAFT MBH