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The rapidly growing base of observational data for supernova explosions of massive stars demands theoretical explanations. Central of these is a self-consistent model for the physical mechanism that provides the energy to start and drive…

Astrophysics · Physics 2009-11-07 H. -Th. Janka , R. Buras , K. Kifonidis , T. Plewa , M. Rampp

The synthesis of hyper-heavy elements is investigated under conditions simulating neutron star environment. The Constrained Molecular Dynamics (CoMD) approach is used to simulate low energy collisions of extremely n-rich nuclei. A new type…

Nuclear Theory · Physics 2022-07-27 M. Veselsky , V. Petousis , Ch. C. Moustakidis , G. A. Souliotis , A. Bonasera

We here focus on the behavior of supernovae that technically explode in 1D (spherical symmetry). When simulated in 3D, however, the outcomes of representative progenitors of this class are quite different in almost all relevant quantities.…

High Energy Astrophysical Phenomena · Physics 2024-05-24 Tianshu Wang , Adam Burrows

Heavy nuclei such as nickel-56 are synthesized in a wide range of core-collapse supernovae (CCSN), including energetic supernovae associated with gamma-ray bursts (GRBs). Recent studies suggest that jet-like outflows are a common feature of…

High Energy Astrophysical Phenomena · Physics 2015-04-23 Shunsaku Horiuchi , Kohta Murase , Kunihito Ioka , Peter Meszaros

We review the nucleosynthesis yields of core-collapse supernovae (SNe) for various stellar masses, explosion energies, and metallicities. Comparison with the abundance patterns of metal-poor stars provides excellent opportunities to test…

Astrophysics · Physics 2009-06-23 K. Nomoto , N. Tominaga , M. Tanaka , K. Maeda , H. Umeda

Thermonuclear supernovae originating from the explosion of a white dwarf accreting mass from a companion star have been suggested as a site for the production of $p$ nuclides. Such nuclei are produced during the explosion, in layers…

Solar and Stellar Astrophysics · Physics 2018-01-03 N. Nishimura , T. Rauscher , R. Hirschi , A. St. J. Murphy , G. Cescutti , C. Travaglio

The scale of alpha-element yields is difficult to predict from theory because of uncertainties in massive star evolution, supernova physics, and black hole formation, and it is difficult to constrain empirically because the impact of higher…

Astrophysics of Galaxies · Physics 2023-09-13 David H. Weinberg , Emily J. Griffith , James W. Johnson , Todd A. Thompson

One of the main challenges in modeling massive stars to the onset of core collapse is the computational bottleneck of nucleosynthesis during advanced burning stages. The number of isotopes formed requires solving a large set of…

Determining the Equation of State (EOS) of dense neutron-rich nuclear matter is a shared goal of both nuclear physics and astrophysics. Except possible phase transitions, the density dependence of nuclear symmetry \esym is the most…

Nuclear Theory · Physics 2019-07-23 Bao-An Li , Plamen G. Krastev , De-Hua Wen , Nai-Bo Zhang

One of the central problems in supernova theory is the question how massive stars explode. Understanding the physical processes that drive the explosion is crucial for linking the stellar progenitors to the final remnants and for predicting…

Astrophysics · Physics 2007-05-23 H. -Th. Janka , R. Buras , K. Kifonidis , M. Rampp , T. Plewa

We study the physics behind the neutrino-driven mechanism for gamma-ray bursts and hypernovae, deriving the critical density at which these outbursts occur in the collapsar model. The agreement between this derivation and results from past…

Astrophysics · Physics 2009-11-07 Chris L. Fryer , Peter Meszaros

Core-collapse supernovae are among Nature's grandest explosions. They are powered by the energy released in gravitational collapse and include a rich set of physical phenomena involving all fundamental forces and many branches of physics…

High Energy Astrophysical Phenomena · Physics 2011-11-29 C. D. Ott , E. P. O'Connor , B. Dasgupta

Gravitational waves from the collision of binary neutron stars provide a unique opportunity to study the behaviour of supranuclear matter, the fundamental properties of gravity, and the cosmic history of our Universe. However, given the…

General Relativity and Quantum Cosmology · Physics 2022-11-02 Gregory Ashton , Tim Dietrich

Hydrodynamics and explosive nucleosynthesis in bipolar supernova explosions are examined to account for some peculiar properties of hypernovae as well as peculiar abundance patterns of metal-poor stars. The explosion is supposed to be…

Astrophysics · Physics 2009-11-07 K. Maeda , K. Nomoto

Neutrons can induce background events in underground experiments looking for rare processes. Neutrons in a MeV range in deep underground laboratories are produced in spontaneous fission processes and ($\alpha,n$) reactions. A number of…

Nuclear Experiment · Physics 2022-12-05 Vitaly A. Kudryavtsev , Piotr Krawczun , Rayna Bocheva

We analyze the experimental data on nuclei and hypernuclei yields recently obtained by the STAR collaboration. The hybrid dynamical and statistical approaches which have been developed previously are able to describe the experimental data…

Nuclear Theory · Physics 2023-11-21 N. Buyukcizmeci , T. Reichert , A. S. Botvina , M. Bleicher

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…

Nuclear Theory · Physics 2022-12-20 Shun Furusawa , Hiroki Nagakura

Core-collapse Supernovae (CCSNe) mark the deaths of stars more massive than about eight times the mass of the sun and are intrinsically the most common kind of catastrophic cosmic explosions. They can teach us about many important physical…

High Energy Astrophysical Phenomena · Physics 2019-08-08 Maryam Modjaz , Claudia P. Gutierrez , Iair Arcavi

The most energetic part of the electromagnetic spectrum bears the purest clues to the synthesis of atomic nuclei in the universe. The decay of radioactive species, synthesized in stellar environments and ejected into the interstellar…

Astrophysics · Physics 2009-10-31 Elisabeth Vangioni-Flam , Reuven Ramaty , Michel Casse

Ascertaining the core-collapse supernova mechanism is a complex, and yet unsolved, problem dependent on the interaction of general relativity, hydrodynamics, neutrino transport, neutrino-matter interactions, and nuclear equations of state…

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