Abstract
We have been developing a numerical radiation- hydrodynamics program in order to study the nonlinear evolution of instabilities in line-driven winds from luminous, early- type stars. The present, preliminary version of this program assumes a l-D, spherically symmetric, isothermal stellar wind that is driven radially outward through absorption of a point source of continuum radiation by a fixed ensemble of isolated, pure-absorption lines. Initial tests of the code indicate that the velocity structure of nonlinear pulses in such a wind may be quite different than assumed in previous analyses. For example, the numerically computed structures show much steeper rarefaction and much more gradual compression than the sawtooth periodic shock structures previously assumed by Lucy. If these preliminary results are confirmed by further computations and analysis, they would have important implications for interpreting radio, ultraviolet, and x-ray observations that are thought to be associated with instabilities in hot star winds.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
