Magnetism in Massive Stars
(2019)cite arxiv:1912.06422Comment: 12 pages, 8 figures, Proceedings for Stellar Magnetic Fields: A workshop in honour of the career and contributions of John Landstreet, July 8-11th, 2019 London, Ontario, Canada.Abstract
Massive stars are the drivers of star formation and galactic dynamics due to
their relatively short lives and explosive demises, thus impacting all of
astrophysics. Since they are so impactful on their environments, through their
winds on the main sequence and their ultimate supernovae, it is crucial to
understand how they evolve. Recent photometric observations with space-based
platforms such as CoRoT, K2, and now TESS have permitted access to their
interior dynamics through asteroseismology, while ground-based
spectropolarimetric measurements such as those of ESPaDOnS have given us a
glimpse at their surface magnetic fields. The dynamics of massive stars involve
a vast range of scales. Extant methods can either capture the long-term
structural evolution or the short-term dynamics such as convection, magnetic
dynamos, and waves due to computational costs. Thus, many mysteries remain
regarding the impact of such dynamics on stellar evolution, but they can have
strong implications both for how they evolve and what they leave behind when
they die. Some of these dynamics including rotation, tides, and magnetic fields
have been addressed in recent work, which is reviewed in this paper.
Description
Magnetism in Massive Stars