Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ap%26ss.322..101r&link_type=abstract
Astrophysics and Space Science, Volume 322, Issue 1-4, pp. 101-105
Astronomy and Astrophysics
Astrophysics
3
Laboratory Astrophysics, Supersonic Astrophysical Flows, Shocked Clumps, Omega Laser
Scientific paper
A wide variety of objects in the universe drive supersonic outflows through the interstellar medium which is often highly clumpy. These inhomogeneities affect the morphology of the shocks that are generated. The hydrodynamics are difficult to model as the problem is inherently 3D and the clumps are subject to a variety of fluid instabilities as they are accelerated and destroyed by the shock. Over the last two years, we have been carrying out experiments at the University of Rochester’s Omega laser to address the interaction of a dense-plasma jet with a localised density perturbation. More recently, we have turned our attention to the interaction of a shock wave with a spherical particle. We use a 1.6-mm diameter, 1.2-mm length Omega hohlraum to drive a composite plastic ablator (which includes bromine to prevent M-band radiation from preheating the experiment). The ablator acts as a “piston” driving a shock into 0.3 g cm-3 foam containing a 0.5-mm diameter sapphire sphere. We radiograph along two orthogonal lines of sight, using nickel or zinc pinhole-apertured X-ray backlighters, to study the subsequent hydrodynamics. We present initial experimental results and two-dimensional simulations of the experiment.
Blue B. E.
Coker Robert
Foster John M.
Frank Alejandro
Hansen John Freddy
No associations
LandOfFree
Laboratory experiments to study supersonic astrophysical flows interacting with clumpy environments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Laboratory experiments to study supersonic astrophysical flows interacting with clumpy environments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory experiments to study supersonic astrophysical flows interacting with clumpy environments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1314180