Global 3-D solar-type star-disc dynamo systems: I. MHD modeling

Details Global 3-D solar-type star-disc dynamo systems: I. MHD modeling Global 3-D solar-type star-disc dynamo systems: I. MHD modeling

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..340v&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 4, p.340

Astronomy and Astrophysics

Astronomy

8

Ism: Jets And Outflows, Accretion, Accretion Disks, Magnetohydrodynamics (Mhd), Stars: Mass-Loss, Stars: Pre-Main Sequence

Scientific paper

We have carried out global three-dimensional magnetohydrodynamic simulations of the star-disc interaction region around a young solar-type star. The magnetic field is generated and maintained by dynamos in the star as well as in the disc. The developing mass flows possess non-periodic time-variable azimuthal structure and are controlled by the nonaxisymmetric magnetic fields. Since the stellar field drives a strong stellar wind, accretion is anti-correlated with the stellar field strength and disc matter is spiraling onto the star at low latitudes, both contrary to the generally assumed accretion picture.

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