Radiation Hydrodynamics in Supernovae

Details Radiation Hydrodynamics in Supernovae Radiation Hydrodynamics in Supernovae

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.298...87h&link_type=abstract

Astrophysics and Space Science, Volume 298, Issue 1-2, pp. 87-92

Astronomy and Astrophysics

Astrophysics

4

Radiation Transport, Hydrodynamics, Supernova

Scientific paper

We discuss the current status of our hydrodynamical radiation (HYDRA) code for rapidly expanding, low-density envelopes commonly found in core collapse and thermonuclear supernovae. In supernovae, one of the main issues is the coupling between a radiation field and properties of the matter. Due to the low densities, nonthermal excitation by high-energy photons from radioactive decays and the time dependence of the problem, significant departures from local thermodynamical equilibrium (LTE) are common throughout the envelope even at large optical depths. This effect must be taken into account to simulate the evolution of spectra and light curves which are the basic tools to link between explosion physics and observations.

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