6533b856fe1ef96bd12b2581

RESEARCH PRODUCT

On the Origin of the X-Ray Emission in Protostellar Jets Close to the Launching Site

Rosaria BonitoRosaria BonitoS. UstamujicA. I. Gómez De CastroSalvatore OrlandoMarco MiceliMarco Miceli

subject

PhysicsJet (fluid)Shock (fluid dynamics)Astrophysics::High Energy Astrophysical PhenomenaX-raySupersonic speedAstrophysicsMagnetohydrodynamicsAstrophysics::Galaxy AstrophysicsCollimated lightMagnetic field

description

Observations of stellar jets show evidence of X-ray emitting shocks close to the launching site. In some cases, the shocked features appear to be stationary (e.g. HH 154 and DG Tau). We aim at investigating the origin of X-ray emission and the effect of perturbations in X-ray emitting stationary shocks in stellar jets. We performed a set of 2.5-dimensional MHD numerical simulations modelling supersonic pulsed jets ramming into a magnetized medium, exploring different parameters for the model. We consider two cases: a jet less dense than the ambient medium (HH 154), and a jet denser than the ambient (DG Tau). In both cases, we found that the jet is collimated by the magnetic field forming a quasi-stationary shock at the base which emits in X-rays even when perturbations are present.

yearjournalcountryeditionlanguage
2019-01-01
https://doi.org/10.1007/978-3-030-14128-8_8