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A toy model of the post-shock region of core-collapse supernovae is used to study the non-linear development of turbulent motions driven by convection in the presence of advection. Our numerical simulations indicate that buoyant…

太阳与恒星天体物理 · 物理学 2018-07-18 Rémi Kazeroni , Brendan K. Krueger , Jérôme Guilet , Thierry Foglizzo , Daniel Pomarède

The explosion outcome and diagnostics of core-collapse supernovae depend sensitively on the nature of the stellar progenitor, but most studies to date have focused exclusively on one-dimensional, spherically-symmetric massive star…

太阳与恒星天体物理 · 物理学 2022-01-14 David Vartanyan , Matthew S. B. Coleman , Adam Burrows

We present numerical results on three-dimensional (3D) hydrodynamic core-collapse simulations of an $11.2 M_{\odot}$ star. By comparing one-(1D) and two-dimensional(2D) results with those of 3D, we study how the increasing spacial…

高能天体物理现象 · 物理学 2015-05-30 Tomoya Takiwaki , Kei Kotake , Yudai Suwa

The multidimensional character of the hydrodynamics in core-collapse supernova (CCSN) cores is a key facilitator of explosions. Unfortunately, much of this work has necessarily been performed assuming axisymmetry and it remains unclear…

太阳与恒星天体物理 · 物理学 2015-06-11 Joshua C. Dolence , Adam Burrows , Jeremiah W. Murphy , Jason Nordhaus

We have conducted nineteen state-of-the-art 3D core-collapse supernova simulations spanning a broad range of progenitor masses. This is the largest collection of sophisticated 3D supernova simulations ever performed. We have found that…

高能天体物理现象 · 物理学 2020-01-08 Adam Burrows , David Radice , David Vartanyan , Hiroki Nagakura , M. Aaron Skinner , Joshua Dolence

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 significantly. Considerable progress has…

太阳与恒星天体物理 · 物理学 2020-06-11 B. Müller

The most energetic core-collapse supernovae are thought to arise from rapidly rotating, magnetised progenitors, yet the three-dimensional structure of their pre-collapse interior remains poorly constrained, and realistic distributions of…

太阳与恒星天体物理 · 物理学 2026-05-25 Adam Griffiths , Miguel-Ángel Aloy , Martin Obergaulinger

The overwhelming evidence that the core collapse supernova mechanism is inherently multidimensional, the complexity of the physical processes involved, and the increasing evidence from simulations that the explosion is marginal presents…

天体物理学 · 物理学 2009-11-13 S. W. Bruenn , C. J. Dirk , A. Mezzacappa , J. C. Hayes , J. M. Blondin , W. R. Hix , O. E. B. Messer

Two-dimensional (2D) hydrodynamical simulations of progenitor evolution of a 23 solar mass star, close to core collapse (about 1 hour, in 1D), with simultaneously active C, Ne, O, and Si burning shells, are presented and contrasted to…

太阳与恒星天体物理 · 物理学 2015-05-27 W. David Arnett , Casey Meakin

We present self-consistent, axisymmetric core-collapse supernova simulations performed with the Prometheus-Vertex code for 18 pre-supernova models in the range of 11-28 solar masses, including progenitors recently investigated by other…

太阳与恒星天体物理 · 物理学 2016-07-06 Alexander Summa , Florian Hanke , Hans-Thomas Janka , Tobias Melson , Andreas Marek , Bernhard Müller

The neutrino mechanism of core-collapse supernova is investigated via non-relativistic, two-dimensional (2D), neutrino radiation-hydrodynamic simulations. For the transport of electron flavor neutrinos, we use the interaction rates defined…

高能天体物理现象 · 物理学 2016-01-27 Kuo-Chuan Pan , Matthias Liebendörfer , Matthias Hempel , Friedrich-Karl Thielemann

We conduct a series of numerical experiments into the nature of three-dimensional (3D) hydrodynamics in the postbounce stalled-shock phase of core-collapse supernovae using 3D general-relativistic hydrodynamic simulations of a…

高能天体物理现象 · 物理学 2015-08-06 E. Abdikamalov , C. D. Ott , D. Radice , L. F. Roberts , R. Haas , C. Reisswig , P. Moesta , H. Klion , E. Schnetter

Unraveling the mechanism for core-collapse supernova explosions is an outstanding computational challenge and the problem remains essentially unsolved despite more than four decades of effort. However, much progress in realistic modeling…

太阳与恒星天体物理 · 物理学 2015-05-18 S. W. Bruenn , A. Mezzacappa , W. R. Hix , J. M. Blondin , P. Marronetti , O. E. B. Messer , C. J. Dirk , S. Yoshida

The details of the physical mechanism that drives core-collapse supernovae (CCSNe) remain uncertain. While there is an emerging consensus on the qualitative outcome of detailed CCSN mechanism simulations in 2D, only recently have…

高能天体物理现象 · 物理学 2018-10-10 Evan O'Connor , Sean Couch

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 candidates, convection and the so-called…

太阳与恒星天体物理 · 物理学 2015-06-05 B. Mueller , H. -Th. Janka , A. Heger

Fostered by the possibilities of multi-dimensional computational modeling, in particular the advent of three-dimensional (3D) simulations, our understanding of the neutrino-driven explosion mechanism of core-collapse supernovae (SNe) has…

高能天体物理现象 · 物理学 2017-10-25 H. -Thomas Janka , Michael Gabler , Annop Wongwathanarat

Using the new state-of-the-art core-collapse supernova (CCSN) code F{\sc{ornax}}, we have simulated the three-dimensional dynamical evolution of the cores of 9-, 10-, 11-, 12-, and 13-M$_{\odot}$ stars from the onset of collapse. Stars from…

太阳与恒星天体物理 · 物理学 2019-03-15 Adam Burrows , David Radice , David Vartanyan

We investigate the post-explosion phase in core-collapse supernovae with 2D hydrodynamical simulations and a simple neutrino treatment. The latter allows us to perform 46 simulations and follow the evolution of the 32 successful explosions…

高能天体物理现象 · 物理学 2021-11-03 M. Witt , A. Psaltis , H. Yasin , C. Horn , M. Reichert , T. Kuroda , M. Obergaulinger , S. M. Couch , A. Arcones

Core-collapse supernovae, the culmination of massive stellar evolution, are spectacular astronomical events and the principle actors in the story of our elemental origins. Our understanding of these events, while still incomplete, centers…

We report results from a series of three-dimensional (3D) rotational core-collapse simulations for $11.2$ and 27 $M_{/odot}$ stars employing neutrino transport scheme by the isotropic diffusion source approximation. By changing the initial…

高能天体物理现象 · 物理学 2016-07-13 Tomoya Takiwaki , Kei Kotake , Yudai Suwa