Further criteria for the existence of steady line-driven winds
Dec, 200430 pages
Published in:
- Astrophys.J. 622 (2005) 577-588
e-Print:
- astro-ph/0412504 [astro-ph]
DOI:
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Abstract: (arXiv)
In Paper I, we showed that steady line-driven disk wind solutions can exist by using simple models that mimic the disk environment. Here I extend the concepts introduced in Paper I and discuss many details of the analysis of the steady/unsteady nature of 1D line-driven winds. This work confirms the results and conclusions of Paper I, and is thus consistent with the steady nature of the 1D streamline line-driven disk wind models of Murray and collaborators and the 2.5D line-driven disk wind models of Pereyra and collaborators. When including gas pressures effects, as is routinely done in time-dependent numerical models, I find that the spatial dependence of the nozzle function continues to play a key role in determining the steady/unsteady nature of supersonic line-driven wind solutions. I show here that the existence/nonexistence of local wind solutions can be proved through the nozzle function without integrating the equation of motion. This work sets a detailed framework with which we will analyze, in a following paper, more realistic models than the simple models of Paper I.- accretion, accretion disks
- hydrodynamics
- novae, cataclysmic variables
- quasars: absorption lines
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