Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.1702f&link_type=abstract
American Astronomical Society Meeting 210, #17.02; Bulletin of the American Astronomical Society, Vol. 39, p.117
Astronomy and Astrophysics
Astronomy
Scientific paper
The intense surface magnetism of Ap stars has attracted much scrutiny. The observed persistent fields are generally thought to be of primordial origin, but dynamo generation of magnetic fields may offer alternative possibilities. Deep within the interiors of such stars, vigorous core convection likely couples with rotation to yield magnetic dynamo action, generating strong magnetic fields. Recent numerical models suggest that a primordial field remaining from the star’s formation may possess a highly twisted toroidal shape in the radiative interior. We have used detailed 3-D simulations to study the interaction of such a magnetic field with a dynamo generated within the core of a 2 solar mass A-type star. Dynamo action realized under these circumstances is much more vigorous than in the absence of a fossil field in the radiative envelope, yielding magnetic field strengths (of order 100 kG) much higher than their equipartition values relative to the convective velocities. We examine the generation of these fields, as well as their effect on the complex dynamics of the convective core.
Browning Matthew K.
Brun Allan Sacha
Featherstone Nicholas
Toomre Juri
No associations
LandOfFree
Magnetic Dynamo Action In The Convective Cores Of A-type Stars In The Presence Of Fossil Fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic Dynamo Action In The Convective Cores Of A-type Stars In The Presence Of Fossil Fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic Dynamo Action In The Convective Cores Of A-type Stars In The Presence Of Fossil Fields will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1028710