The structure of knots in variable stellar jets - I. Symmetric knots.

摘要: Jets associated with young stars (Herbig-Haro jets) are usually composed of a series well-aligned knots optical emission. Recent observations show that these move at speeds about 200-300 km s −1 , which is the same order as inferred fluid speed in jets. The most obvious explanation for this velocity jet source varies time and leads to internal working surfaces travelling down (Raga et al.). In paper we present numerical simulations flow one there indeed conditions under behave assumed by Raga al