Alfven surface

See also: Alfvén surface

English

Alternative forms

• Alfvén surface

Etymology

Named after H.O.G. Alfvén.

Noun

Alfven surface (plural Alfven surfaces)

1. (stellar astronomy) The outer edge of the corona. The boundary that separates a star's atmosphere from its exosphere (heliosphere, astrosphere), where Alfven waves transition into stellar wind (solar wind).