HR: 1340h
AN: SM33B-1337    [Abstracts]
TI: Effects Of Pressure Anisotropy On The Magnetic Field In The Inner Magnetosphere
AU: * Wu, L
EM: wuliang@rice.edu
AF: Rice University, Physics and Astronomy Dept. MS-108, 6100 Main St., Houston, TX 77005, United States
AU: Toffoletto, F R
EM: toffo@rice.edu
AF: Rice University, Physics and Astronomy Dept. MS-108, 6100 Main St., Houston, TX 77005, United States
AU: Wolf, R A
EM: rawolf@rice.edu
AF: Rice University, Physics and Astronomy Dept. MS-108, 6100 Main St., Houston, TX 77005, United States
AB: We present results from a version of an equilibrium solver that has been modified to include the effects of anisotropic pressure. The equilibrium solver uses a frictional technique to iterate a set of modified MHD equations to equilibrium. The initial pressure distribution is determined from an empirical model of Lui et al [1994] that specifies the pressure anisotropy as a function of position in the tail. In this model, the region beyond approximately 15 Re is assumed to have isotropic pressure, consistent with observations. The initial magnetic field is a Tsyganenko [1989] magnetic field model. For various magnetospheric conditions, we will display the differences between the resulting anisotropic-equilibrium magnetic field and an equilibrium computed from the isotropic version of the code for the same total thermal energy.
DE: 2700 MAGNETOSPHERIC PHYSICS (6939)
DE: 2730 Magnetosphere: inner
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting