Simulations of Radiative Shocks in the Regime of SN Breakout Shocks.

Details Simulations of Radiative Shocks in the Regime of SN Breakout Shocks. Simulations of Radiative Shocks in the Regime of SN Breakout Shocks.

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21442706d&link_type=abstract

American Astronomical Society, AAS Meeting #214, #427.06; Bulletin of the American Astronomical Society, Vol. 41, p.697

Astronomy and Astrophysics

Astronomy

Scientific paper

We have entered an era when detection of shock breakout from SNe will become routine. Such shocks are radiative, as radiative energy transport is a dominant aspect of their dynamics. They are for a time in the regime where the system is optically thin outward from the density jump but optically thick inward. Accurate simulations of such shocks will be a challenge, as their radiation transport occurs on multiple scales and their hydrodynamics is unstable. In our Center for Radiative Shock Hydrodynamics we are developing a simulation code to simulate experimental radiative shocks that are in the regime of the SN breakout shocks. The code will feature block-adaptive hydrodynamics, realistic treatment of materials, and a variety of radiation transport options. We plan in due course to apply this code to SN breakout shocks. We will describe the code and show results of initial simulations of the experiments. The experiments produce such shock waves in Xe or Ar by using a laser to shock, ionize, and accelerate a Be plate into a gas-filled shock tube at above 100 km/s. We will discuss and show how structure develops in these systems due to both radiative energy transfer and hydrodynamic instability.
Supported by the DOE NNSA under the Predictive Sci. Academic Alliance Program by grant DE-FC52-08NA28616, the Stewardship Sci. Academic Alliances program by grant DE-FG52-04NA00064, and the Nat. Laser User Facility by grant DE-FG03-00SF22021.

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