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In a core collapse supernova, collective oscillations of neutrinos emitted by the proto-neutron star significantly modifies the partition of energy between different flavors in a way which is potentially important for the nucleosynthesis of…

High Energy Astrophysical Phenomena · Physics 2017-03-29 T. Bulmus , Y. Pehlivan

Core-collapse supernova explosions are driven by a central engine that converts a small fraction of the gravitational binding energy released during core collapse to outgoing kinetic energy. The suspected mode for this energy conversion is…

High Energy Astrophysical Phenomena · Physics 2017-12-25 Evan O'Connor , C. J. Horowitz , Zidu Lin , Sean Couch

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

We provide yields from 189 neutrino-driven core-collapse supernova (CCSN) simulations covering zero-age main sequence masses between 11 and 75 solar masses and three different metallicities. Our CCSN simulations have two main advantages…

High Energy Astrophysical Phenomena · Physics 2025-01-15 Finia P. Jost , Marta Molero , Gerard Navó , Almudena Arcones , Martin Obergaulinger , Francesca Matteucci

We present the spectra of pre trapping neutrinos emitted from a core collapse supernova (having main sequence masses 15 and 25 $M_{\sun}$) within 1 kpc which can be detected by terrestrial detectors. The neutrino spectrum depends on the…

Astrophysics · Physics 2009-09-25 A. Ray , F. K. Sutaria , J. Sheikh

(abridged) When stripped from their hydrogen-rich envelopes, stars with initial masses between $\sim$7 and 11 M$_\odot$ develop massive degenerate cores and collapse. Depending on the final structure and composition, the outcome can range…

High Energy Astrophysical Phenomena · Physics 2022-12-14 Savvas Chanlaridis , John Antoniadis , David R. Aguilera-Dena , Götz Gräfener , Norbert Langer , Nikolaos Stergioulas

We develop a phenomenological statistical model for dilute star matter at finite temperature, in which free nucleons are treated within a mean-field approximation and nuclei are considered to form a loosely interacting cluster gas. Its…

Nuclear Theory · Physics 2010-12-24 Ad. R. Raduta , F. Gulminelli

Observations of metal-poor stars indicate that at least two different nucleosynthesis sites contribute to the production of r-process elements. One site is responsible for the production of light r-process elements Z<~50 while the other…

High Energy Astrophysical Phenomena · Physics 2015-06-17 G. Martínez-Pinedo , T. Fischer , L. Huther

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…

Astrophysics · Physics 2007-05-23 H. -Th. Janka , W. Keil

The majority of massive stars live in binary or multiple systems and will interact during their lifetimes, which helps to explain the observed diversity of core-collapse supernovae. Donor stars in binary systems can lose most of their…

Solar and Stellar Astrophysics · Physics 2021-12-08 E. Laplace , S. Justham , M. Renzo , Y. Götberg , R. Farmer , D. Vartanyan , S. E. de Mink

The quest for the origin of the chemical elements, which we find in our body, in our planet (Earth), in our star (Sun), or in our galaxy (Milky Way) could only be resolved with a thorough understanding of the nuclear physics properties of…

Nuclear Experiment · Physics 2018-03-26 René Reifarth , David Brown , Saed Dababneh , Yuri A. Litvinov , Shea M. Mosby

Though the neutrino-driven convection model for the core-collapse explosion mechanism has received strong support in recent years, there are still many uncertainties in the explosion parameters -- such as explosion energy, remnant mass, and…

High Energy Astrophysical Phenomena · Physics 2020-02-19 Sydney Andrews , Chris L. Fryer , Samuel W. Jones , Wesley P. Even , Marco Pignatari

The evolutionary pathways of core-collapse supernova progenitors at the low-mass end of the spectrum are beset with major uncertainties. In recent years, a variety of evolutionary channels has been discovered in addition to the classical…

Solar and Stellar Astrophysics · Physics 2017-10-10 B. Müller , S. Wanajo , H. -Th. Janka , A. Heger , D. Gay , S. A. Sim

Observations of core-collapse supernovae (CCSNe) reveal a wealth of information about the dynamics of the supernova ejecta and its composition but very little direct information about the progenitor. Constraining properties of the…

High Energy Astrophysical Phenomena · Physics 2022-08-03 Brandon L. Barker , Chelsea E. Harris , MacKenzie L. Warren , Evan P. O'Connor , Sean M. Couch

In this paper, we present a new approximation for efficiently and effectively including heavy-lepton neutrino pair-production processes in neutrino transport simulations of core-collapse supernovae. In the neutrino-driven explosion…

High Energy Astrophysical Phenomena · Physics 2025-01-29 Aurore Betranhandy , Evan O'Connor

We compare three different statistical models for the equation of state (EOS) of stellar matter at subnuclear densities and temperatures (0.5-10 MeV) expected to occur during the collapse of massive stars and supernova explosions. The…

A crucial ingredient affecting fast neutrino flavor conversion in core-collapse supernovae (SNe) is the shape of the angular distribution of the electron-neutrino lepton number (ELN). The presence of an ELN crossing signals favorable…

High Energy Astrophysical Phenomena · Physics 2025-09-04 Marie Cornelius , Irene Tamborra , Malte Heinlein , Shashank Shalgar , Hans-Thomas Janka

We present numerical simulations of stellar core-collapse with spherically symmetric, general relativistic hydrodynamics up to black hole formation. Using the CoCoNuT code, with a newly developed grey leakage scheme for the neutrino…

High Energy Astrophysical Phenomena · Physics 2013-06-28 Bruno Peres , Micaela Oertel , Jerome Novak

With presently known input physics and computer simulations in 1D, a self-consistent treatment of core collapse supernovae does not yet lead to successful explosions, while 2D models show some promise. Thus, there are strong indications…

In the late progressive stages of heavy stars, electron capture and $\beta^\pm$-decay are the governing processes. The weak rates are essential inputs for modeling the stages of high-mass stars before supernova explosions. As per results…

Nuclear Theory · Physics 2025-04-04 Fakeha Farooq , Jameel-Un Nabi , Ramoona Shehzadi