Stellar magnetic fields: observations and nonlinear modeling

Details Stellar magnetic fields: observations and nonlinear modeling Stellar magnetic fields: observations and nonlinear modeling

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh13a1506l&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH13A-1506

Astronomy and Astrophysics

Astrophysics

[7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7539] Solar Physics, Astrophysics, And Astronomy / Stellar Astronomy, [7544] Solar Physics, Astrophysics, And Astronomy / Stellar Interiors And Dynamo Theory

Scientific paper

Magnetic fields on a global scale are observed in a wide variety of astrophysical objects, spanning from planets, stars, and accretion disks to galaxies. These magnetic fields are anything but passive, taking part in the dynamics of their hosts, resulting for example in the familiar activity phenomena of the Sun, which also affect life here on the Earth. We have a long time series of temperature mapping and photometry of an active late-type star II Peg. II Peg is known as one of the most active RS Cvn stars representing the Sun at a younger age. We are trying to establish the link between the Sun and the more active rapidly rotating stars and compare the results to the dynamo models of the Sun. Preliminary results show some resemblance to the dynamo solutions.

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