Plasma Physics Seminar ( Phys 769)

Dr. Yi-Min Huang, University of New Hampshire

Effects of Line-Tying on the Resistive Tearing Instability

The effects of line-tying on magnetohydrodynamic instabilities are an important issue for astrophysical plasmas, such as the solar corona or astrophysical jets. Recently, several laboratory experiments aimed at studying line-tying effects have been initiated. In this talk I will present the recent results about the effect of line-tying on the resistive tearing instability in the slab geometry. A strong guide field perpendicular to the conducting boundary is assumed, therefore the system is described by the reduced magnetohydrodynamic (RMHD) equations. The linearized eigenvalue problem is solved numerically. I will discuss the numerical methods, the condition for the instability to kick in, as well as the scaling of the linear growthrate with respect to the resistivity and system length.

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