期刊
RESEARCH IN ASTRONOMY AND ASTROPHYSICS
卷 16, 期 5, 页码 -出版社
NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
DOI: 10.1088/1674-4527/16/5/070
关键词
stars: jets; (stars:) binaries: accretion discs; (stars:) supernovae: general; accretion, accretion disks
资金
- Asher Fund for Space Research at the Technion
- E. and J. Bishop Research Fund at the Technion
We propose that sub-Keplerian accretion belts around stars might launch jets. The sub-Keplerian inflow does not form a rotationally supported accretion disk, but it rather reaches the accreting object from a wide solid angle. The basic ingredients of the flow are a turbulent region where the accretion belt interacts with the accreting object via a shear layer, and two avoidance regions on the poles where the accretion rate is very low. A dynamo that is developed in the shear layer amplifies magnetic fields to high values. It is likely that the amplified magnetic fields form polar outflows from the avoidance regions. Our speculative belt-launched jets model has implications on a rich variety of astrophysical objects, from the removal of common envelopes to the explosion of core collapse supernovae by jittering jets.
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