Abstract
We study the impact of rotation on the hydrodynamic evolution of convective vortices during stellar collapse. Using linear hydrodynamics equations, we study the evolution of the vortices from their initial radii in convective shells down to smaller radii where they are expected to encounter the supernova shock. We find that the evolution of vortices is mainly governed by two effects: the acceleration of infall and the accompanying speed up of rotation. The former effect leads to the radial stretching of vortices, which limits the vortex velocities. The latter effect leads to the angular deformation of vortices in the direction of rotation, amplifying their non-radial velocity. We show that the radial velocities of the vortices are not significantly affected by rotation. We study acoustic wave emission and find that it is not sensitive to rotation. Finally, we analyse the impact of the corotation point and find that it has a small impact on the overall acoustic wave emission.
| Original language | English |
|---|---|
| Pages (from-to) | 3617-3628 |
| Number of pages | 12 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 503 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - May 1 2021 |
Funding
The work was supported by Nazarbayev University Faculty Development Competitive Research Grant No. 090118FD5348, and by the Ministry of Education and Science of the Republic of Kazakhstan target program IRN: BR05236454 and grant AP08856149.
Keywords
- Accretion
- Accretion discs
- Convection
- Hydrodynamics
- Stars: massive
- Supernovae: general
- Turbulence
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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