Radiation from Dwarf Nova Discs
Astrophysics
2009-10-30 v1
Abstract
We use the Shaviv and Wehrse (1991) code to model the vertical structure and the emission properties of quiescent dwarf nova discs. We find that in the case of HT Cas the quiescent disc must be optically thin, in contradiction with the requirements of the standard disc instability model. We find a viscosity parameter alpha > 1. Although this is much less than values (~ 100) obtained in isothermal slab models it is not consistent with the accretion disc model assumptions.
Keywords
Cite
@article{arxiv.astro-ph/9806065,
title = {Radiation from Dwarf Nova Discs},
author = {Irit Idan and Jean-Pierre Lasota and Jean-Marie Hameury and Giora Shaviv},
journal= {arXiv preprint arXiv:astro-ph/9806065},
year = {2009}
}
Comments
To be published in Physics Reports, proceedings of the conference Astrophysical Fluids: From Atomic Nuclei to Stars and Galaxies; 11 pages, 7 figures