A Gailitis-type dynamo in the magnetic CP stars?

Details A Gailitis-type dynamo in the magnetic CP stars? A Gailitis-type dynamo in the magnetic CP stars?

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..537m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, April 15, 1990, p. 537-542.

Astronomy and Astrophysics

Astronomy

10

Dynamo Theory, Magnetic Stars, Main Sequence Stars, Peculiar Stars, Stellar Motions, Stellar Magnetic Fields, Stellar Models

Scientific paper

In the Gailitis dynamo as originally formulated, axisymmetric laminar field motions confined to two thin, coaxial tori, symmetrically arranged with respect to an 'equatorial' plane, excite a large-scale non-axisymmetric magnetic field. The simplest mode is of the same topology as a dipole with axis perpendicular to the axis of symmetry of the motions. The topology of the fluid motions is the same as that of the rotationally driven meridional circulation, modified by magnetic or dissipative terms, that is believed to be present in the radiative envelopes of middle main-sequence stars. This paper investigates the possibility that a Gailitis-type mechanism, driven by the meridional circulation, might excite large-scale magnetic fields of 'perpendicular dipole' type in the magnetic CP stars. It is concluded that, although such a dynamo may be excited in a proportion of the more rapidly rotating CP stars, the growth times are too long for kilogauss or stronger fields to be generated from a small 'seed' field within a main-sequence lifetime, except in the most rapid rotators with periods less than about 1 d.

Affiliated with

Also associated with

No associations

Rating

A Gailitis-type dynamo in the magnetic CP stars? 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 A Gailitis-type dynamo in the magnetic CP stars?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Gailitis-type dynamo in the magnetic CP stars? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1382345