Reflection, Refraction, and Coupling of MHD Waves at a Density Step
Abstract
The transrnission and reflection coefficients for MHD waves incident on a density step are calculated. All three modes (fast, slow, and ) are coupled together except when the magnetic field is in the plane of incidence or the plane of the interface. Results for arbitrary orientations of the interface normal, the magnetic field, and the incident wave vector are shown in a series of graphs. Strong coupling between modes occurs for incident wave vectors nearly parallel to the magnetic field. The fast and modes are coupled for P > F , the slow and modes are coupled for P < P , and all three modes are coupled for F Pg . The slow and modes are decoupled for P > P .
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- April 1971
- DOI:
- 10.1086/190231
- Bibcode:
- 1971ApJS...22..419S