2021
DOI: 10.48550/arxiv.2107.00173
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Differential Rotation in a 3D Simulation of Oxygen Shell Burning

Lucy O. McNeill,
Bernhard Müller

Abstract: We study differential rotation in late-stage shell convection in a 3D hydrodynamic simulation of a rapidly rotating 16M helium star with a particular focus on the convective oxygen shell. We find that the oxygen shell develops a quasi-stationary pattern of differential rotation that is neither described by uniform angular velocity as assumed in current stellar evolution models of supernova progenitors, nor by uniform specific angular momentum. Instead, the oxygen shell develops a positive angular velocity grad… Show more

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“…It was not until recently, however, that various groups have evolved in three-dimensions the convective silicon-and oxygen-burning regions of a massive star during the final minutes before core collapse (Couch & Ott 2013;Müller 2016;Yadav et al 2020;Yoshida et al 2019;Fields & Couch 2020Yoshida et al 2021b), with several models including rotation (Yoshida et al 2021a;McNeill & Müller 2021), and with implications for both stellar evolution (McNeill & Müller 2020;Varma & Müller 2021) and explosion outcome (Müller et al 2017;Bollig et al 2021). However, detailed multi-dimensional core-collapse simulations of multidimensional progenitors are still lacking.…”
Section: Introductionmentioning
confidence: 99%
“…It was not until recently, however, that various groups have evolved in three-dimensions the convective silicon-and oxygen-burning regions of a massive star during the final minutes before core collapse (Couch & Ott 2013;Müller 2016;Yadav et al 2020;Yoshida et al 2019;Fields & Couch 2020Yoshida et al 2021b), with several models including rotation (Yoshida et al 2021a;McNeill & Müller 2021), and with implications for both stellar evolution (McNeill & Müller 2020;Varma & Müller 2021) and explosion outcome (Müller et al 2017;Bollig et al 2021). However, detailed multi-dimensional core-collapse simulations of multidimensional progenitors are still lacking.…”
Section: Introductionmentioning
confidence: 99%