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

被引：6
|
作者：
von Rekowski, B.
Piskunov, N.
机构：
[1] Uppsala Univ, Dept Astron & Space Sci, S-75120 Uppsala, Sweden
[2] Univ St Andrews, Sch Math & Stat, St Andrews KY16 9SS, Fife, Scotland
来源：
ASTRONOMISCHE NACHRICHTEN | 2006年 / 327卷 / 04期
关键词：
ISM : jets and outflows; accretion; accretion disks; magnetohydrodynamics (MHD); stars : mass-loss; stars : pre-main sequence;
D O I：
10.1002/asna.200510526
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have carried out global three-dimensional magnetohydrodynamic simulations of the star-disc interaction region around a young solar-type star. T'he 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. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页码：340 / 354
页数：15
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