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We investigate the effects of neutrino-nucleus interactions (the nu-process) on the production of iron-peak elements in Population III core-collapse supernovae. The nu-process and the following proton and neutron capture reactions produce…

天体物理学 · 物理学 2009-11-13 Takashi Yoshida , Hideyuki Umeda , Ken'ichi Nomoto

The production of heavy elements is one of the main by-products of the explosive end of massive stars. A long sought goal is finding differentiated patterns in the nucleosynthesis yields, which could permit identifying a number of…

高能天体物理现象 · 物理学 2024-01-26 M. Reichert , M. Bugli , J. Guilet , M. Obergaulinger , M. Á. Aloy , A. Arcones

Core-collapse supernovae, occurring at the end of massive star evolution, produce heavy elements, including those in the iron peak. Although the explosion mechanism is not yet fully understood, theoretical models can reproduce optical…

太阳与恒星天体物理 · 物理学 2026-02-24 Nobuya Nishimura , Carla Froehlich , Thomas Rauscher

The observation of neutrinos from Supernova~1987A has confirmed the theoretical conjecture that these particles play a crucial role during the collapse of the core of a massive star. Only one per cent of the energy they carry away from the…

天体物理学 · 物理学 2007-05-23 H. -Th. Janka

Supernova theory, numerical and analytic, has made remarkable progress in the past decade. This progress was made possible by more sophisticated simulation tools, especially for neutrino transport, improved microphysics, and deeper insights…

太阳与恒星天体物理 · 物理学 2015-06-05 H. -Thomas Janka

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

If the neutrino luminosity from the proto-neutron star formed during a massive star core collapse exceeds a critical threshold, a supernova (SN) results. Using spherical quasi-static evolutionary sequences for hundreds of progenitors over a…

高能天体物理现象 · 物理学 2015-06-22 Ondrej Pejcha , Todd A. Thompson

Core-collapse supernovae are considered to be important contributors to the primitive dust enrichment of the interstellar medium in the high-redshift universe. Theoretical models of dust formation in stellar explosions have so far provided…

太阳与恒星天体物理 · 物理学 2016-02-03 Davide Lazzati , Alexander Heger

Here I review some nuclear physics aspects of core-collapse supernovae concerning neutrinos. Studies of neutrino emission and interactions in supernovae are crucial to our understanding of the explosion mechanism, the heavy element…

天体物理学 · 物理学 2007-05-23 Yong-Zhong Qian

Fast neutrino-flavor conversion (FFC) is a possible game-changing ingredient in core-collapse supernova (CCSN) theory. In this paper, we examine the impact of FFC on explosive nucleosynthesis by including the effects of FFC in conjunction…

高能天体物理现象 · 物理学 2023-01-04 Shin-ichiro Fujimoto , Hiroki Nagakura

The observation of neutrinos from Supernova 1987A has confirmed the theoretical conjecture that these particles play a crucial role during the collapse of the core of a massive star. Only one per cent of the energy they carry away from the…

天体物理学 · 物理学 2007-05-23 H. -Th. Janka , W. Keil

Core collapse supernovae are the leading actor in the story of the cosmic origin of the chemical elements. Existing models, which generally assume spherical symmetry and parameterize the explosion, have been able to broadly replicate the…

Core-collapse supernovae are the first polluters of heavy elements in the galactic history. As such, it is important to study the nuclear compositions of their ejecta, and understand their dependence on the progenitor structure (e.g., mass,…

太阳与恒星天体物理 · 物理学 2017-08-29 M. Eichler , K. Nakamura , T. Takiwaki , T. Kuroda , K. Kotake , M. Hempel , R. Cabezón , M. Liebendörfer , F-K. Thielemann

We have performed 1-dimensional calculations for explosive nucleosynthesis in collapse-driven supernova and investigated its sensitivity to the initial form of the shock wave. We have found the tendency that the peak temperature becomes…

天体物理学 · 物理学 2015-06-24 S. Nagataki , M. Hashimoto , S. Yamada

Herein, we review the nuclear equations of state (EOSs) %for core-collapse supernova simulations and the constituent nuclei of core-collapse supernovae (CCSNe) and their roles in CCSN simulations. Various nuclei such as deuterons, iron, and…

核理论 · 物理学 2022-12-20 Shun Furusawa , Hiroki Nagakura

We investigated r-process nucleosynthesis in magneto-rotational supernovae, based on a new explosion mechanism induced by the magneto-rotational instability. A series of axisymmetric magneto-hydrodynamical simulations with detailed…

高能天体物理现象 · 物理学 2017-02-16 Nobuya Nishimura , Hidetomo Sawai , Tomoya Takiwaki , Shoichi Yamada , Friedrich-Karl Thielemann

Most massive stars end their lives in core-collapse supernova explosions and enrich the interstellar medium with explosively nucleosynthesized elements. Following core collapse, the explosion is subject to instabilities as the shock…

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 investigate neutrino-driven convection in core collapse supernovae and its ramifications for the explosion mechanism. We begin with an ``optimistic'' 15 solar mass precollapse model, which is representative of the class of stars with…

天体物理学 · 物理学 2007-05-23 A. Mezzacappa , A. C. Calder , S. W. Bruenn , J. M. Blondin , M. W. Guidry , M. R. Strayer , A. S. Umar

Magnetorotational supernovae are a rare type of core-collapse supernovae where the magnetic field and rotation play a central role in the dynamics of the explosion. We present the post-processed nucleosynthesis of state-of-the-art…