Open AccessHall magnetohydrodynamic reconnection: The Geospace Environment Modeling challenge
Author(s) -
Ma Z. W.,
Bhattacharjee A.
Publication year - 2001
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/1999ja001004
Subject(s) - magnetohydrodynamics , magnetohydrodynamic drive , physics , magnetic reconnection , electrical resistivity and conductivity , hall effect , computational physics , magnetic field , geophysics , condensed matter physics , quantum electrodynamics , quantum mechanics
Numerical results are presented on the Geospace Environment Modeling (GEM) reconnection challenge (and its variants) from the Hall magnetohydrodynamics (MHD) code developed at the University of Iowa (UI). Resistivity provides the mechanism for breaking field lines in this study. It is shown that the peak reconnection rate in the quasi‐saturated regime is controlled dominantly by ions and has a weak dependence on the resistivity. The reconnection rate is close to those obtained from other particle‐in‐cell, hybrid, and Hall MHD codes. Some differences between the results from the UI Hall MHD code and other codes are discussed.