Download presentation
Presentation is loading. Please wait.
1
“Turbulence in low-β reconnection”
by Ferraro & Rogers 2004, Physics of Plasmas, 11, (DOI: / ) S.Tanuma
2
Abstract 2D 2fluid simulations with finite electron inertia
Turbulence occurs when β is small by secondary instability, which are excited by large gradients in guide-field (see Mathaeous for turbulent reconnection). This turbulence does not affect the reconnection rate (altough the group of Cho, Lazarian, & Vishinac conclude reconnection rate is enhanced by turbulence.).
3
Model Collisionless, 2D 2-fluid model X-y plane
Bx=Bxo tanh***: bipolar current Bz=3Bxo 512 x 256 grid Mass ratio Mi/Me=100
4
Stabilizing factors Large guide field (Bz>10Bxo)
Higher temperature (β>0.2) The omission of ion dynamics
5
Simulations Kelvin-helmholtz instability (see Arzner & Scholer for hybrid simulation of Kelvin-Helmholtz instability coupled with fire hose instability)
6
Central Region
7
Growth rate Reconnection rate does not depend on the turbulence.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.