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An Isaac Newton Institute Workshop

MAGNETOHYDRODYNAMICS OF STELLAR INTERIORS <br> Supported by the European Commission, Sixth Framework Programme - <br> Marie Curie Conferences and Training Courses - MSCF-CT-2003-503674

Magnetic fields in and around young stars

9th September 2004

Author: Lee Hartmann (CfA)

Abstract

Young solar-type stars exhibit strongly enhanced levels of magnetic activity. In addition, a complex set of behaviors arise from the presence of circumstellar accretion disks with their own magnetic fields, along with the interaction between the stellar magnetic field and the disk. I will review the observational evidence for the star-disk-magnetosphere paradigm, discuss angular momentum regulation, and point out current theoretical challenges.