The Interaction Between a Pulsed Astrophysical Jet and Small-Scale Heterogeneous Media

Abstract

We have performed 2D hydrodynamic simulations of a pulsed astrophysical jet propagating through a medium that is populated with spherical inhomogeneities, or "clumps," which are smaller than the jet radius. The clumps are seen to affect the jet in several ways, such as impeding jet propagation and deflecting the jet off-axis. While there has been some debate as to the prevalence of these types of condensations in the ISM or in molecular clouds, the exploration of this region of parameter space nonetheless both shows the potential for these clumps to disrupt astrophysical jets and yields results which recover aspects of recent observations of Herbig-Haro objects. We find that the propagation of the jet and the vorticity induced in the clump/ambient medium correlate well with a "dynamic filling function" $f_d$ across all the simulations.

23 pages, 11 figures; submitted to ApJ

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Cited by in corpus (9)

• Simulating Magnetohydrodynamical Flow with Constrained Transport and Adaptive Mesh Refinement; Algorithms & Tests of the AstroBEAR Code
• Fluid Dynamics of Stellar Jets in Real Time: Third Epoch HST Images of HH 1, HH 34, and HH 47
• The turbulent destruction of clouds - I. A k-epsilon treatment of turbulence in 2D models of adiabatic shock-cloud interactions
• The Impact of Recent Advances in Laboratory Astrophysics on our Understanding of the Cosmos
• Self-Convergence of Radiatively Cooling Clumps
• The turbulent destruction of clouds - III. Three dimensional adiabatic shock-cloud simulations
• Evolution of dust in protoplanetary disks of eruptive stars
• Hypersonic Buckshot: Astrophysical Jets as Heterogeneous Collimated Plasmoids
• The complex structure of HH 110 as revealed from Integral Field Spectroscopy