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Local and Global Instabilities in Radiatively Driven Mass Loss

Event Details

Event Dates: 

Friday, September 2, 2016 - 12:00pm

Seminar Location: 

  • JILA 10th Floor - Foothills Room

Speaker Name(s): 

Stan Owocki

Speaker Affiliation(s): 

University of Delaware
Seminar Type/Subject

Scientific Seminar Type: 

  • Astrophysics Lunch Seminar

Event Details & Abstract: 

Some 40+ years ago here at CU, Castor, Abbott, and Klein (CAK) developed the basic steady-state theory for radiatively driven mass loss via line scattering of a star’s continuum radiation. This talk will review local and global instabilities inherent to line-driving and how this leads to extensive spatial structure and variability in such winds. I will then discuss analogous issues for continuum driving of the much stronger eruptive mass loss seen in Luminous Blue Variable stars (LBVs). The general concepts have relevance for radiatively driven mass loss in other astrophysical contexts, including for example disk winds from CVs or AGNs.

A reception will precede the talk at 11:30 a.m.