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Rising magnetic flux tubes as a source of IR-variability of the accretion disks of young stars

Published online by Cambridge University Press:  13 January 2020

Sergey A. Khaibrakhmanov Open the ORCID record for Sergey A. Khaibrakhmanov [Opens in a new window] ,
Alexander E. Dudorov  and
Andrey M. Sobolev
Sergey A. Khaibrakhmanov
Affiliation:
Kourovka Astronomical Observatory, Ural Federal University, 620000, 51 Lenina str., Ekaterinburg, Russia email: khaibrakhmanov@csu.ru Theoretical Physics Dept., Chelyabinsk State University, 454001, 129 Bratiev Kashirinykh str., Chelyabinsk, Russia
Alexander E. Dudorov
Affiliation:
Theoretical Physics Dept., Chelyabinsk State University, 454001, 129 Bratiev Kashirinykh str., Chelyabinsk, Russia
Andrey M. Sobolev
Affiliation:
Kourovka Astronomical Observatory, Ural Federal University, 620000, 51 Lenina str., Ekaterinburg, Russia email: khaibrakhmanov@csu.ru
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Abstract

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We investigate dynamics of slender magnetic flux tubes (MFT) in the accretion disks of young stars. Simulations show that MFT rise from the disk and can accelerate to 20-30 km/s causing periodic outflows. Magnetic field of the disk counteracts the buoyancy, and the MFT oscillate near the disk’s surface with periods of 10-100 days. We demonstrate that rising and oscillating MFT can cause the IR-variability of the accretion disks of young stars.

Keywords

Accretionaccretion disksinstabilitiesMHDISM: jets and outflowsISM: magnetic fieldsinfrared: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 295 - 296
Copyright
© International Astronomical Union 2020 

References

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