Type II supernova
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Three-dimensional simulations of neutrino-driven core-collapse supernovae from low-mass single and binary star progenitors Open
We present a suite of seven 3D supernova simulations of non-rotating low-mass progenitors using multigroup neutrino transport. Our simulations cover single star progenitors with zero-age main-sequence masses between 9.6 and 12.5 M-circle d…
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Delay-time distribution of core-collapse supernovae with late events resulting from binary interaction Open
Most massive stars, the progenitors of core-collapse supernovae, are in close binary systems and may interact with their companion through mass transfer or merging. We undertake a population synthesis study to compute the delay-time distri…
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The Gravitational Wave Signal from Core-collapse Supernovae Open
We study gravitational waves (GWs) from a set of 2D multigroup neutrino radiation hydrodynamic simulations of core-collapse supernovae (CCSNe). Our goal is to systematize the current knowledge about the post-bounce CCSN GW signal and recog…
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A successful 3D core-collapse supernova explosion model Open
In this paper, we present the results of our three-dimensional, multigroup, multineutrino-species radiation/hydrodynamic simulation using the state-of-the-art code FORNAX of the terminal dynamics of the core of a non-rotating 16 M⊙ stellar…
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Three-dimensional simulations of rapidly rotating core-collapse supernovae: finding a neutrino-powered explosion aided by non-axisymmetric flows Open
We report results from a series of three-dimensional (3D) rotational core-collapse simulations for 11.2 and 27 M⊙ stars employing neutrino transport scheme by the isotropic diffusion source approximation. By changing the initial strength o…
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Rotation-supported Neutrino-driven Supernova Explosions in Three Dimensions and the Critical Luminosity Condition Open
We present the first self-consistent, 3D core-collapse supernova simulations performed with the Prometheus-Vertex code for a rotating progenitor star. Besides using the angular momentum of the 15 M ⊙ model as obtained in the stellar evolut…
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Global comparison of core-collapse supernova simulations in spherical symmetry Open
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 informativ…
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Different to the core: The pre-supernova structures of massive single and binary-stripped stars Open
The majority of massive stars live in binary or multiple systems and will interact with a companion during their lifetimes, which helps to explain the observed diversity of core-collapse supernovae. Donor stars in binary systems can lose m…
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Three-dimensional supernova explosion simulations of 9-, 10-, 11-, 12-, and 13-M⊙ stars Open
Using the new state-of-the-art core-collapse supernova (CCSN) code fornax, we have simulated the three-dimensional dynamical evolution of the cores of 9-, 10-, 11-, 12-, and 13-M⊙ stars from the onset of collapse. Stars from 8 to 13 M⊙ con…
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Fast neutrino flavor conversions near the supernova core with realistic flavor-dependent angular distributions Open
It has been recently pointed out that neutrino fluxes from a supernova can show substantial flavor conversions almost immediately above the core. Using linear stability analyses and numerical solutions of the fully nonlinear equations of m…
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Multimessenger signals of long-term core-collapse supernova simulations: synergetic observation strategies Open
The next Galactic supernova is expected to bring great opportunities for the\ndirect detection of gravitational waves (GW), full flavor neutrinos, and\nmulti-wavelength photons. To maximize the science return from such a rare\nevent, it is…
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On the occurrence of fast neutrino flavor conversions in multidimensional supernova models Open
The dense neutrino medium in a core-collapse supernova or a neutron-star merger event can experience fast flavor conversions on time/distance scales that are much smaller than those of vacuum oscillations. It is believed that fast neutrino…
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PROGENITOR-DEPENDENT EXPLOSION DYNAMICS IN SELF-CONSISTENT, AXISYMMETRIC SIMULATIONS OF NEUTRINO-DRIVEN CORE-COLLAPSE SUPERNOVAE Open
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 M ⊙ , including progenitors recently investigated by other groups. All…
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Three-dimensional core-collapse supernova simulations of massive and rotating progenitors Open
We present 3D simulations of the core-collapse of massive rotating and non-rotating progenitors performed with the general relativistic neutrino hydrodynamics code coconut-fmt. The progenitor models include Wolf-Rayet stars with initial he…
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Fast collective neutrino oscillations inside the neutrino sphere in core-collapse supernovae Open
Neutrinos are believed to have a key role in the explosion mechanism of\ncore-collapse supernovae as they carry most of the energy released by the\ngravitational collapse of a massive star. If their flavor is converted fast\ninside the neu…
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Where, when and why: occurrence of fast-pairwise collective neutrino oscillation in three-dimensional core-collapse supernova models Open
Fast-pairwise collective neutrino oscillation represents a key uncertainty in the theory of core-collapse supernova (CCSN). Despite the potentially significant impact on CCSN dynamics, it is usually neglected in numerical models of CCSN be…
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PUSHing Core-collapse Supernovae to Explosions in Spherical Symmetry. III. Nucleosynthesis Yields Open
In a previously presented proof-of-principle study, we established a parameterized spherically symmetric explosion method (PUSH) that can reproduce many features of core-collapse supernovae (CCSNe) for a wide range of pre-explosion models.…
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Collisional Triggering of Fast Flavor Conversions of Supernova Neutrinos Open
Fast flavor conversions of supernova neutrinos, possible near the neutrinosphere, depends on an interesting interplay of collisions and neutrino oscillations. Contrary to naïve expectations, the rate of self-induced neutrino oscillations, …
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SUPERLUMINOUS SUPERNOVA SN 2015bn IN THE NEBULAR PHASE: EVIDENCE FOR THE ENGINE-POWERED EXPLOSION OF A STRIPPED MASSIVE STAR Open
We present nebular-phase imaging and spectroscopy for the hydrogen-poor superluminous supernova (SLSN) SN 2015bn, at redshift z = 0.1136, spanning +250–400 days after maximum light. The light curve exhibits a steepening in the decline rate…
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Gravitational waves from 3D core-collapse supernova models: The impact of moderate progenitor rotation Open
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 transpor…
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Correlated Signatures of Gravitational-wave and Neutrino Emission in Three-dimensional General-relativistic Core-collapse Supernova Simulations Open
We present results from general-relativistic (GR) three-dimensional (3D) core-collapse simulations with approximate neutrino transport for three nonrotating progenitors (11.2, 15, and 40 M ⊙ ) using different nuclear equations of state (EO…
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Fast Flavor Depolarization of Supernova Neutrinos Open
Flavor-dependent neutrino emission is critical to the evolution of a supernova and its neutrino signal. In the dense anisotropic interior of the star, neutrino-neutrino forward scattering can lead to fast collective neutrino oscillations, …
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SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova Open
We present UV and/or optical observations and models of SN 2023ixf, a type II supernova (SN) located in Messier 101 at 6.9 Mpc. Early time ( flash ) spectroscopy of SN 2023ixf, obtained primarily at Lick Observatory, reveals emission lines…
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Origin of the elements Open
What is the origin of the oxygen we breathe, the hydrogen and oxygen (in form of water H 2 O) in rivers and oceans, the carbon in all organic compounds, the silicon in electronic hardware, the calcium in our bones, the iron in steel, silve…
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The volumetric rate of superluminous supernovae at<i>z</i>∼ 1 Open
We present a measurement of the volumetric rate of superluminous supernovae\n(SLSNe) at z~1, measured using archival data from the first four years of the\nCanada-France-Hawaii Telescope Supernova Legacy Survey (SNLS). We develop a\nmethod…
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Simulating Turbulence-aided Neutrino-driven Core-collapse Supernova Explosions in One Dimension Open
The core-collapse supernova (CCSN) mechanism is fundamentally 3D, with instabilities, convection, and turbulence playing crucial roles in aiding neutrino-driven explosions. Simulations of CCNSe including accurate treatments of neutrino tra…
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Neutrino quantum kinetics in compact objects Open
Neutrinos play a critical role of transporting energy and changing the lepton density within corecollapse supernovae and neutron star mergers. The quantum kinetic equations (QKEs) combine the effects of neutrino-matter interactions treated…
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Linear analysis of fast-pairwise collective neutrino oscillations in core-collapse supernovae based on the results of Boltzmann simulations Open
Neutrinos are densely populated deep inside the core of massive stars after their gravitational collapse to produce supernova explosions and form compact stars such as neutron stars and black holes. It has been considered that they may cha…
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Radial metal abundance profiles in the intra-cluster medium of cool-core galaxy clusters, groups, and ellipticals Open
The hot intra-cluster medium (ICM) permeating galaxy clusters and groups is not pristine, as it has been continuously enriched by metals synthesised in Type Ia (SNIa) and core-collapse (SNcc) supernovae since the major epoch of star format…
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Revival of the fittest: exploding core-collapse supernovae from 12 to 25 M⊙ Open
Here, we present results of 2D axisymmetric core-collapse supernova simulations, employing the FORNAX code, of nine progenitor models spanning 12 to 25 M⊙. Four of the models explode with inelastic scattering off electrons and neutrons as …