<< November 2015 >>
 
 >>
 >>
 >>
 >>
 >>
Sun Mon Tue Wed Thu Fri Sat
 1   2   3   4   5   6   7 
 8   9   10   11   12   13   14 
 15   16   17   18   19   20   21 
 22   23   24   25   26   27   28 
 29   30   
 
Add an Event

Events at Physics

<< Summer 2015 Fall 2015 Spring 2016 >>
Subscribe to receive email announcements of events

Events on Monday, November 23rd, 2015

Plasma Physics (Physics/ECE/NE 922) Seminar
Theory and Modeling of Electron Pressure Anisotropy during Magnetic Reconnection
Time: 12:00 pm
Place: 2241 Physics Bldg
Speaker: Ari Le, Los Alamos National Laboratory
Abstract:
Fully kinetic simulations have shown that the structure of the thin current sheets that form during collisionless reconnection can fall into a variety of regimes depending on the electron pressure anisotropy [1]. Furthermore, recent two-fluid simulations with anisotropic electron equations of state appropriate for reconnection confirm that the electron pressure anisotropy may drive highly elongated current sheets in the reconnection exhaust [2]. While fully kinetic simulations are useful to model small regions of the Earth's magnetosphere, they are still far too expensive for global modeling. Thus, we have implemented the electron equations of state in the hybrid (kinetic ions and fluid electrons) code H3D [3], and initial 2D hybrid simulations of reconnection agree well with fully kinetic simulations. The updated hybrid code is a first step towards including electron anisotropy and full ion kinetics in global simulations of Earth's magnetosphere and laboratory experiments. [1] Le et al., Phys. Rev. Lett. 110, 135004 (2013) [2] Ohia et al., Phys. Rev. Lett. 109, 115004 (2012) [3] Karimabadi et al., Phys. Plasmas 21, 062308 (2014)
Host: Jan Egedal, UW Physics
Add this event to your calendar

©2013 Board of Regents of the University of Wisconsin System