How Can Jets Survive MHD Instabilities?
Abstract
We present the main findings of two recent studies using high-resolution MHD simulations of supersonic magnetized shear flow layers. First, a strong large-scale coalescence effect partially countered by small-scale reconnection events is shown to dominate the dynamics in a two-dimensional layer subject to Kelvin-Helmholtz (KH) instabilities. Second, an interaction mechanism between two different types of instabilities (KH and current-driven modes) is shown to occur in a cylindrical jet configuration embedded in an helical magnetic field. Finally, we discuss the implications of these results for astrophysical jets survival.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- September 2004
- DOI:
- 10.1023/B:ASTR.0000044660.92627.d5
- Bibcode:
- 2004Ap&SS.293..131B
- Keywords:
-
- jets;
- MHD;
- numerical