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The neutrino-driven wind, which occurs after the onset of a core-collapse supernova explosion, has long been considered as the possible site for the synthesis of heavy r-process elements in the Universe. Only recently, it has been possible…

High Energy Astrophysical Phenomena · Physics 2015-06-03 T. Fischer , G. Martínez-Pinedo , M. Hempel , M. Liebendörfer

We study the neutrino-induced production of nuclides in explosive supernova nucleosynthesis for progenitor stars with solar metallicity including neutrino nucleus reactions for all nuclei with charge numbers $Z < 76$ with average neutrino…

High Energy Astrophysical Phenomena · Physics 2018-10-17 A. Sieverding , G. Martínez-Pinedo , L. Huther , K. Langanke , A. Heger

Neutrinos emitted during stellar core collapse up to their trapping phase carry information about the stage from which the Supernova explosion process initiates. The dominant $\nu_e$ emission mechanism is by electron capture on free protons…

Astrophysics · Physics 2009-10-30 F. K. Sutaria , A. Ray

An new method of calculating the energy spectrum of neutrinos and antineutrinos produced in the electron-positron annihilation processes in hot stellar plasma is presented. Detection of these neutrinos, produced copiously in the…

Astrophysics · Physics 2007-05-23 M. Misiaszek , A. Odrzywolek , M. Kutschera

Using the recent shell model evaluation of stellar weak interaction rates we have calculated the neutrino spectra arising from electron capture on pf-shell nuclei under presupernova conditions. We present a simple parametrization of the…

Nuclear Theory · Physics 2009-11-07 K. Langanke , G. Martinez-Pinedo , J. M. Sampaio

In order to explore the consequences of the neutrino irradiation for the supernova r-process nucleosynthesis, we calculate the rates of charged-current and neutral-current neutrino reactions on neutron-rich heavy nuclei, and estimate the…

Nuclear Theory · Physics 2016-09-08 Y. -Z. Qian , W. C. Haxton , K. Langanke , P. Vogel

Supernova explosions are the most powerful neutrino sources. The neutrino emission is also the dominating cooling mechanism for a proto-neutron star, whose interior is mainly composed of extremely dense and hot nuclear matter. Neutrino…

Nuclear Theory · Physics 2024-04-08 Mingya Duan , Michael Urban

Neutrinos produced during a supernova explosion induce reactions on abundant nuclei in the outer stellar shells and contribute in this way to the synthesis of the elements in the Universe. This neutrino nucleosynthesis process has been…

High Energy Astrophysical Phenomena · Physics 2019-06-25 Karlheinz Langanke , Gabriel Martinez-Pinedo , Andre Sieverding

Neutrino emission drives neutron star cooling for the first several hundreds of years after its birth. Given the low energy ($\sim$ keV) nature of this process, one expects very few nonstandard particle physics contributions which could…

Astrophysics · Physics 2009-11-10 Prashanth Jaikumar , K. R. S. Balaji , Charles Gale

In preparation for a set of hydrodynamical simulations of core-collapse supernovae and protoneutron star winds, we investigate the rates of production and thermalization of $\nu_\mu$ and $\nu_\tau$ neutrinos in dense nuclear matter.…

Astrophysics · Physics 2009-10-31 Todd A. Thompson , Adam Burrows

Based on the shell model for Gamow-Teller and the Random Phase Approximation for forbidden transitions, we have calculated reaction rates for inelastic neutrino-nucleus scattering (INNS) under supernova (SN) conditions, assuming a matter…

In order to resolve the overproduction problem of 11B in supernova explosions during Galactic chemical evolution, the dependence of the ejected masses of the light elements produced through the nu-process in supernova explosions on…

Astrophysics · Physics 2009-11-10 Takashi Yoshida , Toshitaka Kajino

We calculate the energy-differential rate for neutrino emission from electron-nucleus bremsstrahlung in stellar interiors taking into account the effects of electron screening and ionic correlations. We compare the energy-differential and…

Solar and Stellar Astrophysics · Physics 2016-08-10 Gang Guo , Yong-Zhong Qian

Neutrinos emitted during the collapse, bounce and subsequent explosion provide information about supernova dynamics. The neutrino spectra are determined by weak interactions with nuclei and nucleons in the inner regions of the star, and…

Astrophysics · Physics 2009-12-15 S. R. Souza , A. W. Steiner , W. G. Lynch , R. Donangelo , M. A. Famiano

We present a new numerical tool designed to probe the dense layers of neutron star crusts. It is based on the time-dependent Hartree-Fock-Bogoliubov theory with generalized Skyrme nuclear energy-density functionals of the Brussels-Montreal…

Nuclear Theory · Physics 2024-12-05 Daniel Pȩcak , Agata Zdanowicz , Nicolas Chamel , Piotr Magierski , Gabriel Wlazłowski

We review the main neutrino emission mechanisms in neutron star crusts and cores. Among them are the well-known reactions such as the electron-positron annihilation, plasmon decay, neutrino bremsstrahlung of electrons colliding with atomic…

Astrophysics · Physics 2011-07-19 D. G. Yakovlev , A. D. Kaminker , O. Y. Gnedin , P. Haensel

After the initiation of the explosion of core-collapse supernovae, neutrinos emitted from the nascent neutron star drive a supersonic baryonic outflow. This neutrino-driven wind interacts with the more slowly moving, earlier supernova…

Solar and Stellar Astrophysics · Physics 2015-05-19 A. Arcones , H. -T. Janka

Astrophysical environments that reach temperatures greater than $\sim$ 100 keV can have significant neutrino energy loss via both plasma processes and nuclear weak interactions. We find that nuclear processes likely produce the…

High Energy Astrophysical Phenomena · Physics 2016-12-07 G. Wendell Misch , George M. Fuller

The mu- and tau-neutrinos emitted from a proto-neutron star are produced by nucleonic bremsstrahlung N + N -> N + N + nu + nu-bar and pair annihilation e^+ + e^- -> nu + nu-bar, reactions which freeze out at the "energy sphere." Before…

Astrophysics · Physics 2014-10-13 G. G. Raffelt

We investigate the late-time neutrino emission powered by fallback mass accretion onto proto-neutron star (PNS), using neutrino radiation-hydrodynamic simulations with full Boltzmann neutrino transport. We follow the time evolution of…

High Energy Astrophysical Phenomena · Physics 2024-01-10 Ryuichiro Akaho , Hiroki Nagakura , Thierry Foglizzo
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