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We investigate the influence of magnetic fields on the evolution of binary neutron-star (BNS) merger remnants via three-dimensional (3D) dynamical-spacetime general-relativistic (GR) magnetohydrodynamic (MHD) simulations. We evolve a…

High Energy Astrophysical Phenomena · Physics 2020-10-29 Philipp Mösta , David Radice , Roland Haas , Erik Schnetter , Sebastiano Bernuzzi

We have analyzed the magnetic effects that may occur in rapidly rotating core collapse supernovae. We consider effects from both magnetic turbulence and the formation of magnetic bubbles. For magnetic turbulence we have made a perturbative…

Astrophysics · Physics 2009-11-13 J. R. Wilson , G. J. Mathews , H. E. Dalhed

We investigate the gravitational wave emission for 10 supernova progenitors from magnetorotational core-collapse to the supernova explosion using fully three-dimensional dynamical-spacetime general-relativistic magnetohydrodynamics…

High Energy Astrophysical Phenomena · Physics 2026-02-04 Sophia C. Schnauck , Swapnil Shankar , Philipp Mösta , Roland Haas , Erik Schnetter

Young massive stars in compact stellar clusters could end their evolution as core-collapse supernovae a few million years after the cluster was built. The blast wave of a supernova propagates through the inner cluster region with multiple…

High Energy Astrophysical Phenomena · Physics 2023-11-06 D. V. Badmaev , A. M. Bykov , M. E. Kalyashova

We investigate the role of resolution and initial magnetic field strength on core-collapse supernovae in simulations of a non-rotating $13 \mathrm{M_\odot}$ progenitor. Specifically, we study the effect on shock revival, explosion dynamics,…

High Energy Astrophysical Phenomena · Physics 2026-04-02 Vishnu Varma , Bernhard Müller

We present the first 3D fully coupled magneto-thermal simulations of neutron stars (including the most realistic background structure and microphysical ingredients so far) applied to a very complex initial magnetic field topology in the…

High Energy Astrophysical Phenomena · Physics 2023-06-28 Clara Dehman , Daniele Viganò , Stefano Ascenzi , Jose A. Pons , Nanda Rea

Rapidly rotating and strongly magnetized protoneutron stars (PNSs) created in core-collapse supernovae can drive relativistic magnetized winds. Ions and neutrons can be co-accelerated while they remain coupled through elastic collisions. We…

High Energy Astrophysical Phenomena · Physics 2024-10-11 Jose Alonso Carpio , Nick Ekanger , Mukul Bhattacharya , Kohta Murase , Shunsaku Horiuchi

We present a comparison between several simulation codes designed to study the core-collapse supernova mechanism. We pay close attention to controlling the initial conditions and input physics in order to ensure a meaningful and informative…

We perform two- (2D) and three-dimensional (3D) hydrodynamics simulations of convective oxygen shell-burning that takes place deep inside a massive progenitor star of a core-collapse supernova. Using one dimensional (1D) stellar evolution…

Solar and Stellar Astrophysics · Physics 2019-08-14 Takashi Yoshida , Tomoya Takiwaki , Kei Kotake , Koh Takahashi , Ko Nakamura , Hideyuki Umeda

Core-collapse supernovae (CCSNe) are the final stage of massive stars, marking the birth of neutron stars (NSs). The aspherical mass ejection drives a natal kick of the forming NS. In this work we study the properties of the NS kick based…

High Energy Astrophysical Phenomena · Physics 2019-10-23 Ko Nakamura , Tomoya Takiwaki , Kei Kotake

We perform a series of simplified numerical experiments to explore how rotation impacts on the three-dimensional (3D) hydrodynamics of core-collapse supernovae. For the sake of our systematic study, we employ a light-bulb scheme to trigger…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Ko Nakamura , Takami Kuroda , Tomoya Takiwaki , Kei Kotake

Early-type stars have convective cores due to a steep temperature gradient produced by the CNO cycle. These cores can host dynamos, and the generated magnetic fields can be relevant to explain the magnetism observed in Ap/Bp stars. Our main…

Solar and Stellar Astrophysics · Physics 2024-11-27 J. P. Hidalgo , P. J. Käpylä , D. R. G Schleicher , C. A. Ortiz-Rodríguez , F. H. Navarrete

We present predictions for the gravitational-wave (GW) emission of three-dimensional supernova (SN) simulations performed for a 15 solar-mass progenitor with the Prometheus-Vertex code using energy-dependent, three-flavor neutrino…

High Energy Astrophysical Phenomena · Physics 2019-05-14 H. Andresen , E. Müller , H. -Th. Janka , A. Summa , K. Gill , M. Zanolin

We performed the first numerical simulations of magnetorotational instability from a sub-magnetar-class seed magnetic field in core collapse supernovae. As a result of axisymmetric ideal MHD simulations, we found that the magnetic field is…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Hidetomo Sawai , Shoichi Yamada , Hideyuki Suzuki

We investigate observable signatures of a first-order quantum chromodynamics (QCD) phase transition in the context of core collapse supernovae. To this end, we conduct axially symmetric numerical relativity simulations with multi-energy…

High Energy Astrophysical Phenomena · Physics 2022-01-19 Takami Kuroda , Tobias Fischer , Tomoya Takiwaki , Kei Kotake

We present the results from a series of two-dimensional core-collapse simulations using a rotating progenitor star. We find that the convection in these simulations is less vigorous because a) rotation weakens the core bounce which seeds…

Astrophysics · Physics 2009-10-31 C. L. Fryer , A. Heger

We study in detail the ejecta conditions and theoretical nucleosynthetic results for 18 three-dimensional core-collapse supernova (CCSN) simulations done by F{\sc ornax}. {Most simulations are carried out to at least 3 seconds after bounce,…

High Energy Astrophysical Phenomena · Physics 2024-01-17 Tianshu Wang , Adam Burrows

In the seconds following their formation in core-collapse supernovae, "proto"-magnetars drive neutrino-heated magneto-centrifugal winds. Using a suite of two-dimensional axisymmetric MHD simulations, we show that relatively slowly rotating…

High Energy Astrophysical Phenomena · Physics 2023-10-24 Tejas Prasanna , Matthew S. B. Coleman , Matthias J. Raives , Todd A. Thompson

We investigate the influence of parametric magnetic field configurations of a hypermassive neutron star (HMNS) on electromagnetic (EM) observables, specifically the kilonova lightcurves and nucleosynthesis yields. We perform…

High Energy Astrophysical Phenomena · Physics 2022-08-11 Sebastiaan de Haas , Pablo Bosch , Philipp Mösta , Sanjana Curtis , Nathanyel Schut

Abridged. It is important for the star formation process to understand the collapse of a prestellar dense core. We investigate the effect of the magnetic field during the first collapse up to the formation of the firstcore, focusing…

Astrophysics · Physics 2009-11-13 P. Hennebelle , S. Fromang