Three-dimensional GRMHD Simulations of Rapidly Rotating Stellar Core-Collapse

Abstract

We present results from fully general relativistic (GR), three-dimensional (3D), neutrino-radiation magneto-hydrodynamic (MHD) simulations of stellar core collapse of a 20 M${}_{\odot }$ star with spectral neutrino transport. Our focus is to study the gravitational-wave (GW) signatures from the magnetorotationally (MR)-driven models. By parametrically changing the initial angular velocity and the strength of the magnetic fields in the core, we compute four models. Our results show that the MHD outflows are produced only for models (two out of four), to which magnetic field strengths of 10${}^{12}$ G and rotation rates of 1 or 2 rad s${}^{-1}$ are initially imposed in the core. Seen from the direction perpendicular to the rotational axis, a characteristic waveform is obtained exhibiting a monotonic time increase in the wave amplitude. As previously identified, this stems from the propagating MHD outflows along the axis. We show that the GW amplitude from anisotropic neutrino emission becomes more than one order-of-magnitude bigger than that from the matter contribution, whereas seen from the rotational axis, both of the two components are in the same order-of-magnitudes. Due to the memory effect, the frequency of the neutrino GW from our full-fledged 3D-MHD models is in the range less than $\sim$10 Hz. Toward the future GW detection for a Galactic core-collapse supernova, if driven by the MR mechanism, the planned next-generation detector as DECIGO is urgently needed to catch the low-frequency signals.

12 pages, 10 figures

References in corpus (30)

• Exploring the Sensitivity of Next Generation Gravitational Wave Detectors
• Nucleosynthesis and Remnants in Massive Stars of Solar Metallicity
• Magnetorotationally driven Supernovae as the origin of early galaxy $r$-process elements?
• Magnetorotational Core-Collapse Supernovae in Three Dimensions
• The gravitational wave burst signal from core collapse of rotating stars
• Truncated Moment Formalism for Radiation Hydrodynamics in Numerical Relativity
• The Status of Multi-Dimensional Core-Collapse Supernova Models
• High-spin binary black hole mergers
• Magnetorotational collapse of massive stellar cores to neutron stars: Simulations in full general relativity
• Special Relativistic Simulations of Magnetically-dominated Jets in Collapsing Massive Stars
• The Progenitor Dependence of the Preexplosion Neutrino Emission in Core-Collapse Supernovae
• Supernova Neutrino Light Curves and Spectra for Various Progenitor Stars: From Core Collapse to Proto-neutron Star Cooling
• Axisymmetric simulations of magnetorotational core collapse: Approximate inclusion of general relativistic effects
• Effects of neutrino oscillations on nucleosynthesis and neutrino signals for an 18 M supernova model
• Anisotropic emission of neutrino and gravitational-wave signals from rapidly rotating core-collapse supernovae
• Gravitational waves from 3D MHD core collapse simulations
• General relativistic simulations of pasive-magneto-rotational core collapse with microphysics
• Gravitational Waves from Neutrino Asymmetries in Core-Collapse Supernovae
• Three-Dimensional Hydrodynamic Simulations of Convective Nuclear Burning In Massive Stars Near Iron Core Collapse
• On The Development of Multidimensional Progenitor Models For Core-collapse Supernovae
• Insights into non-axisymmetric instabilities in three-dimensional rotating supernova models with neutrino and gravitational-wave signatures
• 3D Simulations of Oxygen Shell Burning with and without Magnetic Fields
• A three-dimensional hydrodynamics simulation of oxygen-shell burning in the final evolution of a fast-rotating massive star
• Three-dimensional Hydrodynamics Simulations of Precollapse Shell Burning in the Si- and O-rich Layers
• A Comparison of 2D Magnetohydrodynamic Supernova Simulations with the CoCoNuT-FMT and Aenus-Alcar Codes
• Multimessenger Emission from the Accretion Induced Collapse of White Dwarfs
• The Three-Dimensional Collapse of a Rapidly Rotating 16 $M_{\odot }$ Star
• Stochastic Core Spin-Up in Massive Stars -- Implications of 3D Simulations of Oxygen Shell Burning
• Numerical relativity simulations of black hole and relativistic jet formation
• Old Data, New Forensics: The First Second of SN 1987A Neutrino Emission

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