Launching jets from accretion belts

Ron Schreier, Noam Soker

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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.

Original languageEnglish
Article number70
JournalResearch in Astronomy and Astrophysics
Volume16
Issue number5
DOIs
StatePublished - May 2016
Externally publishedYes

Keywords

  • accretion discs-(stars:) supernovae
  • general-accretion, accretion disks
  • jets-(stars:) binaries
  • stars

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