Turbulence Generation by Shock-Acoustic-Wave Interaction in Core-Collapse Supernovae
| dc.contributor.author | Abdikamalov, Ernazar | |
| dc.contributor.author | Huete, César | |
| dc.contributor.author | Nussupbekov, Ayan | |
| dc.contributor.author | Berdibek, Shapagat | |
| dc.date.accessioned | 2019-04-27T10:34:51Z | |
| dc.date.available | 2019-04-27T10:34:51Z | |
| dc.date.issued | 2018-05-07 | |
| dc.description.abstract | Convective instabilities in the advanced stages of nuclear shell burning can play an important role in neutrino-driven supernova explosions. In our previous work, we studied the interaction of vorticity and entropy waves with the supernova shock using a linear perturbations theory. In this paper, we extend our work by studying the effect of acoustic waves. As the acoustic waves cross the shock, the perturbed shock induces a field of entropy and vorticity waves in the post-shock flow. We find that, even when the upstream flow is assumed to be dominated by sonic perturbations, the shock-generated vorticity waves contain most of the turbulent kinetic energy in the post-shock region, while the entropy waves produced behind the shock are responsible for most of the density perturbations. The entropy perturbations are expected to become buoyant as a response to the gravity force and then generate additional turbulence in the post-shock region. This leads to a modest reduction of the critical neutrino luminosity necessary for producing an explosion, which we estimate to be less than 5%. | en_US |
| dc.identifier.citation | Abdikamalov, E.; Huete, C.; Nussupbekov, A.; Berdibek, S. Turbulence Generation by Shock-Acoustic-Wave Interaction in Core-Collapse Supernovae. Particles 2018, 1, 97-110. | en_US |
| dc.identifier.uri | http://dx.doi.org/10.3390/particles1010007 | |
| dc.identifier.uri | http://nur.nu.edu.kz/handle/123456789/3867 | |
| dc.language.iso | en | en_US |
| dc.publisher | MDPI | en_US |
| dc.rights | Attribution-NonCommercial-ShareAlike 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/us/ | * |
| dc.subject | hydrodynamics | en_US |
| dc.subject | shock waves | en_US |
| dc.subject | turbulence | en_US |
| dc.subject | supernovae: general | en_US |
| dc.title | Turbulence Generation by Shock-Acoustic-Wave Interaction in Core-Collapse Supernovae | en_US |
| dc.type | Article | en_US |
| workflow.import.source | science |