抄録
Functional dependence of relaxed states of magnetohydrodynamic (MHD) plasmas on profiles of resistivity η is derived approximately as μ 0j//~= √ μ 0α /2η B for parallel components to B, by using a general self-organization theory based on dissipative structures due to selective dissipations associated with higher eigenmodes for dissipative dynamic operators. Typical results of three-dimensional simulations for resistive MHD plasmas with both “nonuniform η ” and “uniform η ” are shown to compare with the theoretical result. Comparison between the theoretical and the numerical results suggests that the attractor of dissipative structures in resistive MHD plasmas is given by \
abla× (η j)=(α /2)B and is reduced to \
abla× B=λ B in the case with the “uniform η ” and no pressure gradient.
