Convection and Magnetism in Stars: How magnetic fields are built, and what they can do
Magnetic fields are ubiquitous in astrophysics. In stars, they help govern spindown and mass loss; in accretion disks, they likely play a crucial role in facilitating angular momentum transport; for some planets, they can act act as partial shields against potentially harmful radiation. But a comprehensive theory of how such magnetic fields are built &emdash; how magnetic dynamos work &emdash; remains elusive. I will talk about how recent observations and theoretical models of stellar convection are providing powerful new clues about the operation of astrophysical dynamos.
Date: Mardi, le 3 février 2009 Heure: 16:00 Lieu: Université McGill Ernest Rutherford Physics Building, R.E. Bell Conference Room (room 103)