The X-ray emission mechanism in the protostellar jet HH 154
- Autori: BONITO; R; ORLANDO; S; PERES G; FAVATA; F; ROSNER; R
- Anno di pubblicazione: 2004
- Tipologia: Articolo in rivista (Articolo in rivista)
- Parole Chiave: ISM: Herbig-Haro objects, ISM: individual objects: HH 154, ISM: jets and outflows, X-rays: ISM
- OA Link: http://hdl.handle.net/10447/1469
Abstract
We study the mechanism causing the X-ray emission recently detected in protostellar jets, by performing a detailed modeling of the interaction between a supersonic jet originating from a young stellar object and the ambient medium, for various values of density contrast, ν, between the ambient density and the jet, and of Mach number, M; radiative losses and thermal conduction have been taken into account. Here we report a representative case which reproduces, without any ad hoc assumption, the characteristics of the X-ray emission recently observed in the protostellar jet HH 154. We find that the X-ray emission originates from a localized blob, consistent with observations, which moves with velocity v ˜ 500 km s-1; we therefore predict the X-ray source to have a detectable proper motion.