# Matter Mixing in Core-collapse Supernova Ejecta: Large Density Perturbations in the Progenitor Star?

@article{Mao2015MatterMI, title={Matter Mixing in Core-collapse Supernova Ejecta: Large Density Perturbations in the Progenitor Star?}, author={Jirong Mao and Masaomi Ono and Shigehiro Nagataki and M. Hashimoto and H. Ito and Jin Matsumoto and Maria Giovanna Dainotti and S.-H. Lee}, journal={arXiv: High Energy Astrophysical Phenomena}, year={2015} }

Matter mixing is one important topic in the study of core-collapse supernova (CCSN) explosions. In this paper, we perform two-dimensional hydrodynamic simulations to reproduce the high velocity $^{56}$Ni clumps observed in SN 1987A. This is the first time that large density perturbation is proposed in the CCSN progenitor to generate Rayleigh-Taylor (RT) instability and make the effective matter mixing. In the case of a spherical explosion, RT instability is efficient at both C+O/He and He/H… Expand

#### Figures and Tables from this paper

#### 14 Citations

Matter Mixing in Aspherical Core-collapse Supernovae: Three-dimensional Simulations with Single-star and Binary Merger Progenitor Models for SN 1987A

- Physics
- 2019

We perform three-dimensional hydrodynamic simulations of aspherical core-collapse supernovae focusing on the matter mixing in SN 1987A. The impacts of four progenitor (pre-supernova) models and… Expand

Hydrodynamics of core-collapse supernovae and their progenitors

- Physics
- 2020

Multi-dimensional fluid flow plays a paramount role in the explosions of massive stars as core-collapse supernovae. In recent years, three-dimensional (3D) simulations of these phenomena have matured… Expand

Hydrodynamics of core-collapse supernovae and their progenitors

- Physics
- Living Reviews in Computational Astrophysics
- 2020

Multi-dimensional fluid flow plays a paramount role in the explosions of massive stars as core-collapse supernovae. In recent years, three-dimensional (3D) simulations of these phenomena have matured… Expand

Three-dimensional Simulations of Magnetar-powered Superluminous Supernovae

- Physics
- 2020

A rapidly spinning magnetar in a young supernova (SN) can produce a superluminous transient by converting a fraction of its rotational energy into radiation. Here, we present the first… Expand

Hydrodynamic simulations unravel the progenitor-supernova-remnant connection in SN 1987A

- Physics
- Astronomy & Astrophysics
- 2020

Context. Massive stars end their lives in catastrophic supernova (SN) explosions. Key information on the explosion processes and on the progenitor stars can be extracted from observations of… Expand

Turbulence Generation by Shock-Acoustic-Wave Interaction in Core-Collapse Supernovae

- Physics
- 2018

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… Expand

Type Ib/Ic Supernovae: Effect of Nickel Mixing on the Early-time Color Evolution and Implications for the Progenitors

- Physics
- The Astrophysical Journal
- 2019

We investigate the effect of mixing of radioactive nickel ($^{56}$Ni) on the early-time color evolution of Type Ib and Ic supernovae (SNe Ib/Ic) using multi-group radiation hydrodynamics simulations.… Expand

The impact of vorticity waves on the shock dynamics in core-collapse supernovae

- Physics
- 2018

Convective perturbations arising from nuclear shell burning can play an important role in propelling neutrino-driven core-collapse supernova explosions. In this work, we analyze the impact of… Expand

Linking three-dimensional core-collapse supernova simulations with observations

- Physics
- Proceedings of the International Astronomical Union
- 2017

Abstract To understand a wide variety of properties of young core-collapse supernova (CCSN) remnants being revealed by modern observations three-dimensional simulations of CCSNe starting from the… Expand

Near-Infrared Knots and Dense Fe Ejecta in the Cassiopeia A Supernova Remnant

- Physics
- 2017

We report the results of broadband (0.95--2.46 $\mu$m) near-infrared spectroscopic observations of the Cassiopeia A supernova remnant. Using a clump-finding algorithm in two-dimensional dispersed… Expand

#### References

SHOWING 1-10 OF 97 REFERENCES

MATTER MIXING IN ASPHERICAL CORE-COLLAPSE SUPERNOVAE: A SEARCH FOR POSSIBLE CONDITIONS FOR CONVEYING 56Ni INTO HIGH VELOCITY REGIONS

- Physics
- 2013

We perform two-dimensional axisymmetric hydrodynamic simulations of matter mixing in aspherical core-collapse supernova explosions of a 16.3 M ☉ star with a compact hydrogen envelope. Observations of… Expand

Toward Connecting Core-collapse Supernova Theory with Observations. I. Shock Revival in a 15 M ? Blue Supergiant Progenitor with SN 1987A Energetics

- Physics
- 2014

We study the evolution of the collapsing core of a 15 M {sub ☉} blue supergiant supernova progenitor from the core bounce until 1.5 s later. We present a sample of hydrodynamic models parameterized… Expand

Non-spherical core collapse supernovae - II. The late-time evolution of globally anisotropic neutrino-driven explosions and their implications for SN 1987 A

- Physics
- 2006

Two-dimensional simulations of strongly anisotropic supernova explosions of a nonrotating $15\,M_{\odot}$ blue supergiant progenitor are presented, which follow the hydrodynamic evolution from times… Expand

Non-spherical core collapse supernovae. I. Neutrino-driven convection, Rayleigh-Taylor instabilities, and the formation and propagation of metal clumps

- Physics
- 2003

We have performed two-dimensional simulations of core collapse supernovae that encompass shock revival by neutrino heating, neutrino-driven convection, explosive nucleosynthesis, the growth of… Expand

New Two-dimensional Models of Supernova Explosions by the Neutrino-heating Mechanism: Evidence for Different Instability Regimes in Collapsing Stellar Cores

- Physics
- 2012

The neutrino-driven explosion mechanism for core-collapse supernovae in its modern flavor relies on the additional support of hydrodynamical instabilities in achieving shock revival. Two possible… Expand

Three-dimensional simulations of core-collapse supernovae: from shock revival to shock breakout

- Physics
- 2015

We present 3D simulations of core-collapse supernovae from blast-wave initiation by the neutrino-driven mechanism to shock breakout from the stellar surface, considering two 15 Msun red supergiants… Expand

Three-dimensional Simulations of Mixing Instabilities in Supernova Explosions

- Physics
- 2010

We present the first three-dimensional (3D) simulations of the large-scale mixing that takes place in the shock-heated stellar layers ejected in the explosion of a 15.5 M ? blue supergiant star. The… Expand

On the nature of core-collapse supernova explosions

- Physics
- 1995

We investigate in this paper the core-collapse supernova explosion mechanism in both one and two dimensions. We verify the usefulness of neutrino-driven overturn (``convection'') between the shock… Expand

THREE-DIMENSIONAL SIMULATIONS OF RAYLEIGH-TAYLOR MIXING IN CORE-COLLAPSE SUPERNOVAE

- Physics
- 2010

We present multidimensional simulations of the post-explosion hydrodynamics in three different 15 M{sub sun} supernova models with zero, 10{sup -4} Z{sub sun}, and Z{sub sun} metallicities. We follow… Expand

Non-spherical core collapse supernovae III. Evolution towards homology and dependence on the numerical resolution

- Physics
- 2010

(abridged) We study the hydrodynamic evolution of a non-spherical core-collapse supernova in two spatial dimensions. We find that our model displays a strong tendency to expand toward the pole. We… Expand