Search Results - "Janka, Hans Thomas"
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Neutron Star Kicks by the Gravitational Tug-boat Mechanism in Asymmetric Supernova Explosions: Progenitor and Explosion Dependence
Published in The Astrophysical journal (01-03-2017)“…Asymmetric mass ejection in the early phase of supernova (SN) explosions can impart a kick velocity to the new-born neutron star (NS). For neutrino-driven…”
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Explosion Mechanisms of Core-Collapse Supernovae
Published in Annual review of nuclear and particle science (23-11-2012)“…Supernova theory, numerical and analytic, has made remarkable progress in the past decade. This progress was made possible by more sophisticated simulation…”
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Hydrodynamical Neutron-star Kicks in Electron-capture Supernovae and Implications for the CRAB Supernova
Published in The Astrophysical journal (20-09-2018)“…Neutron stars (NSs) obtain kicks, typically of several 100 km s−1, at birth. The gravitational tugboat mechanism can explain these kicks as consequences of…”
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Supernova Fallback as Origin of Neutron Star Spins and Spin-kick Alignment
Published in The Astrophysical journal (01-02-2022)“…Natal kicks and spins are characteristic properties of neutron stars (NSs) and black holes (BHs). Both offer valuable clues to dynamical processes during…”
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Stellar Collapse Diversity and the Diffuse Supernova Neutrino Background
Published in The Astrophysical journal (01-03-2021)“…The diffuse cosmic supernova neutrino background (DSNB) is an observational target of the gadolinium-loaded Super-Kamiokande (SK) detector and the forthcoming…”
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Natal kicks of stellar mass black holes by asymmetric mass ejection in fallback supernovae
Published in Monthly notices of the Royal Astronomical Society (11-09-2013)“…Integrating trajectories of low-mass X-ray binaries containing black holes within the Galactic potential, Repetto, Davies & Sigurdsson recently showed that the…”
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Nucleosynthesis in the Innermost Ejecta of Neutrino-driven Supernova Explosions in Two Dimensions
Published in The Astrophysical journal (01-01-2018)“…We examine nucleosynthesis in the innermost neutrino-processed ejecta (a few ) of self-consistent two-dimensional explosion models of core-collapse supernovae…”
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Rotation-supported Neutrino-driven Supernova Explosions in Three Dimensions and the Critical Luminosity Condition
Published in The Astrophysical journal (01-01-2018)“…We present the first self-consistent, 3D core-collapse supernova simulations performed with the Prometheus-Vertex code for a rotating progenitor star. Besides…”
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9
THE LAST MINUTES OF OXYGEN SHELL BURNING IN A MASSIVE STAR
Published in The Astrophysical journal (10-12-2016)“…ABSTRACT We present the first 4π-three-dimensional (3D) simulation of the last minutes of oxygen shell burning in an 18 M supernova progenitor up to the onset…”
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10
Physics of Core-Collapse Supernovae in Three Dimensions: A Sneak Preview
Published in Annual review of nuclear and particle science (19-10-2016)“…Nonspherical mass motions are a generic feature of core-collapse supernovae, and hydrodynamic instabilities play a crucial role in the explosion mechanism. The…”
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Supernova simulations from a 3D progenitor model – Impact of perturbations and evolution of explosion properties
Published in Monthly notices of the Royal Astronomical Society (21-11-2017)“…Abstract We study the impact of large-scale perturbations from convective shell burning on the core-collapse supernova explosion mechanism using 3D multigroup…”
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Flavor-dependent Neutrino Angular Distribution in Core-collapse Supernovae
Published in The Astrophysical journal (20-04-2017)“…According to recent studies, the collective flavor evolution of neutrinos in core-collapse supernovae depends strongly on the flavor-dependent angular…”
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Muons in Supernovae: Implications for the Axion-Muon Coupling
Published in Physical review letters (31-07-2020)Get full text
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14
PROGENITOR-EXPLOSION CONNECTION AND REMNANT BIRTH MASSES FOR NEUTRINO-DRIVEN SUPERNOVAE OF IRON-CORE PROGENITORS
Published in The Astrophysical journal (20-09-2012)“…We perform hydrodynamic supernova (SN) simulations in spherical symmetry for over 100 single stars of solar metallicity to explore the progenitor-explosion and…”
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The infancy of core-collapse supernova remnants
Published in Monthly notices of the Royal Astronomical Society (01-04-2021)“…ABSTRACT We present 3D hydrodynamic simulations of neutrino-driven supernovae (SNe) with the Prometheus-HotB code, evolving the asymmetrically expanding ejecta…”
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16
Gravitational waves and non-axisymmetric oscillation modes in mergers of compact object binaries
Published in Monthly notices of the Royal Astronomical Society (01-11-2011)“…We study the excitation of non-axisymmetric modes in the post-merger phase of binary compact object mergers and the associated gravitational wave emission. Our…”
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Exploring properties of high-density matter through remnants of neutron-star mergers
Published in The European physical journal. A, Hadrons and nuclei (01-03-2016)“… Remnants of neutron-star mergers are essentially massive, hot, differentially rotating neutron stars, which are initially strongly oscillating. As such they…”
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Resolution Study for Three-dimensional Supernova Simulations with the Prometheus-Vertex Code
Published in The Astrophysical journal (01-03-2020)“…We present a carefully designed, systematic study of the angular resolution dependence of simulations with the Prometheus-Vertex neutrino-hydrodynamics code…”
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NS 1987A in SN 1987A
Published in The Astrophysical journal (01-07-2020)“…The possible detection of a compact object in the remnant of SN 1987A presents an unprecedented opportunity to follow its early evolution. The suspected…”
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A NEW MULTI-DIMENSIONAL GENERAL RELATIVISTIC NEUTRINO HYDRODYNAMICS CODE OF CORE-COLLAPSE SUPERNOVAE. III. GRAVITATIONAL WAVE SIGNALS FROM SUPERNOVA EXPLOSION MODELS
Published in The Astrophysical journal (20-03-2013)“…We present a detailed theoretical analysis of the gravitational wave (GW) signal of the post-bounce evolution of core-collapse supernovae (SNe), employing for…”
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