Modeling of laser-generated radiative blast waves, with applications to late-term supernova remnants

Details Modeling of laser-generated radiative blast waves, with applications to late-term supernova remnants Modeling of laser-generated radiative blast waves, with applications to late-term supernova remnants

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phdt.........6k&link_type=abstract

Thesis (PhD). RICE UNIVERSITY, Source DAI-B 64/05, p. 2228, Nov 2003, 138 pages.

Astronomy and Astrophysics

Astrophysics

Scientific paper

The goal of laser astrophysics is to provide a means by which aspects of specific astrophysical phenomena can be reproduced in the laboratory. Although the hydrodynamic instabilities of early supernova remnants have already been studied using this method, the role of significant radiative losses in shock propagation (for example, in late-term remnants) has only been imperfectly modeled. This thesis introduces an improved self-similar analytic approach to radiative blast-wave evolution where the total amount of energy loss remains constant in proportion to the energy flux entering the shock front. The approximation is solved for the cases in which both energy loss from the shock front and heating of the shock (due to the presence of ionization precursors) are significant. Because this solution is independent of the exact method of cooling, it is appropriate for both the laboratory and astrophysical regimes. In addition, this thesis applies the analytic approximation to laboratory- produced radiative blast waves as well as to numerical models of these experimental blast waves. These results will allow for better design of laser-based experiments with further applications to astrophysical phenomena, as well as for an increase in the understanding of the challenges involved in scaling radiative phenomena between laboratory experiments and astrophysical theory.

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