Modeling the winds and magnetospheres of active OB stars

Type Conference Paper
Names Richard H. D. Townsend
Conference Name IAU Symposium
Volume 272
Pages 148-159
Date July 1, 2011
Library Catalog NASA ADS
Abstract After briefly reviewing the theory behind the radiative line-driven winds of OB stars, I examine the processes that can generate structure in them; these include both intrinsic instabilities, and surface perturbations such as pulsation and rotation. I then delve into wind channeling and confinement by magnetic fields as a mechanism for forming longer-lived circumstellar structures. With a narrative that largely follows the historical progression of the field, I introduce the key insights and results that link the first detection of a magnetosphere, over three decades ago, to the recent direct measurement of magnetic braking in a number of active OB stars.
Tags Magnetohydrodynamics: MHD, Stars: Mass Loss, outflows, stars: early-type, stars: emission-line, stars: magnetic fields, stars: rotation, stars: winds
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