Journal Article

Exploding core collapse supernovae with jittering jets

Oded Papish and Noam Soker

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 416, issue 3, pages 1697-1702
Published in print September 2011 | ISSN: 0035-8711
Published online September 2011 | e-ISSN: 1365-2966 | DOI:
Exploding core collapse supernovae with jittering jets

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We argue that jittering jets, i.e. jets that have their launching direction rapidly change, launched by the newly formed neutron star in a core-collapse supernova can explode the star. We show that under a wide range of parameters the fast narrow jets deposit their energy inside the star via shock waves, and form two hot bubbles, that eventually merge, accelerate the rest of the star and lead to the explosion. To prevent the jets from penetrating through the collapsing stellar core and escape with their energy, instead of forming the hot bubbles, the jets should be prevented from drilling a hole through the star. This condition can be met if the jets’ axis rapidly changes its direction. This process of depositing jets’ energy into the ambient medium is termed the penetrating jet feedback mechanism. The feedback exists in that the neutron star (or a black hole) at the centre of the core-collapse supernova shuts off its own growth by exploding the star. The jets deposit their energy at a distance of ∼1000 km from the centre and expel the mass above that radius. In our model, the material near the stalled shock at several hundreds kilometers from the centre is not expelled, but it is rather accreted and feed the accretion disc that blows the jets. The neutrinos might influence the accretion flow, but in the proposed model their role in exploding the star is small.

Keywords: supernovae: general; stars: winds, outflows

Journal Article.  5062 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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