BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:0 UID:UW-Physics-Event-3780 DTSTART:20151123T180000Z DTEND:20151123T190000Z DTSTAMP:20260419T110435Z LAST-MODIFIED:20150925T155702Z LOCATION:2241 Physics Bldg SUMMARY:Theory and Modeling of Electron Pressure Anisotropy during Mag netic Reconnection\, Plasma Physics (Physics/ECE/NE 922) Seminar\, Ari Le\, Los Alamos National Laboratory DESCRIPTION:
\nFully kinetic simulations have shown that the struc ture of the thin current sheets that form during collisionless reconne ction can fall into a variety of regimes depending on the electron pre ssure anisotropy [1]. Furthermore\, recent two-fluid simulations with anisotropic electron equations of state appropriate for reconnection c onfirm that the electron pressure anisotropy may drive highly elongate d current sheets in the reconnection exhaust [2]. While fully kinetic simulations are useful to model small regions of the Earth's magnetosp here\, they are still far too expensive for global modeling. Thus\, we have implemented the electron equations of state in the hybrid (kinet ic ions and fluid electrons) code H3D [3]\, and initial 2D hybrid simu lations of reconnection agree well with fully kinetic simulations. The updated hybrid code is a first step towards including electron anisot ropy and full ion kinetics in global simulations of Earth's magnetosph ere 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) URL:https://www.physics.wisc.edu/events/?id=3780 END:VEVENT END:VCALENDAR