2D numerical study of the radiation influence on shock structure relevant to laboratory astrophysics

Details 2D numerical study of the radiation influence on shock structure relevant to laboratory astrophysics 2D numerical study of the radiation influence on shock structure relevant to laboratory astrophysics

2009-02-10

arxiv.org/abs/0902.1645v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

8 pages, 7 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361/20079136

Radiative shocks are found in various astrophysical objects and particularly at different stages of stellar evolution. Studying radiative shocks, their topology, and thermodynamical properties is therefore a starting point to understanding their physical properties. This study has become possible with the development of large laser facilities, which has provided fresh impulse to laboratory astrophysics. We present the main characteristics of radiative shocks modeled using cylindrical simulations. We focus our discussion on the importance of multi-dimensional radiative-transfer effects on the shock topology and dynamics. We present results obtained with our code HERACLES for conditions corresponding to experiments already performed on laser installations. The multi-dimensional hydrodynamic code HERACLES is specially adapted to laboratory astrophysics experiments and to astrophysical situations where radiation and hydrodynamics are coupled. The importance of the ratio of the photon mean free path to the transverse extension of the shock is emphasized. We present how it is possible to achieve the stationary limit of these shocks in the laboratory and analyze the angular distribution of the radiative flux that may emerge from the walls of the shock tube. Implications of these studies for stellar accretion shocks are presented.

Affiliated with

Also associated with

No associations

Rating

2D numerical study of the radiation influence on shock structure relevant to laboratory astrophysics 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 2D numerical study of the radiation influence on shock structure relevant to laboratory astrophysics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 2D numerical study of the radiation influence on shock structure relevant to laboratory astrophysics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-19991