Results 71 to 80 of about 13,537 (199)

NEUTRINO EFFECTS IN NUCLEOSYNTHESIS [PDF]

Neutrino Physics, 2001
The nucleosynthesis within a Type II supernova occurs in an intense neutrino flux. I discuss some of the effects associated with neutrino interactions, including direct synthesis in the neutrino process, the role of neutrinos in controlling the r-process path and in postprocessing r-process products, and neutrino oscillation connections.
openaire   +2 more sources

Supernova Nucleosynthesis

, 2003
This lecture gives an introduction to the topic of supernova nucleosynthesis which is at the origin of almost all nuclear species that we encounter in the Universe.
J. Knödlseder
core   +1 more source

Direct and Indirect Measurements of the ¹⁹F(p,α)¹⁶O Reaction at Astrophysical Energies Using the LHASA Detector and the Trojan Horse Method

Universe
Fluorine is one of the most interesting elements in nuclear astrophysics. Its abundance can provide important hints to constrain the stellar models since fluorine production and destruction are strictly connected to the physical conditions inside the ...
Giovanni L. Guardo, Giuseppe G. Rapisarda, Dimiter L. Balabanski, Giuseppe D’Agata, Alessia Di Pietro, Pierpaolo Figuera, Marco La Cognata, Marco La Commara, Livio Lamia, Dario Lattuada, Catalin Matei, Marco Mazzocco, Alessandro A. Oliva, Sara Palmerini, Teodora Petruse, Rosario G. Pizzone, Stefano Romano, Maria Letizia Sergi, Roberta Spartá, Xuedou Su, Aurora Tumino, Nikola Vukman   +21 more
doaj   +1 more source

Nucleosynthesis and Nucleo-Cosmochronology

, 2004
I discuss a few selected topics on nucleosynthesis and nucleo-cosmochronology in faint, if not totally illusory, hopes of helping to gain a clear perspective of the future astronuclear physics.
K. Takahashi
core   +1 more source

Production of Lithium and Heavy Elements in AGB Stars Experiencing PIEs

Galaxies
Asymptotic giant branch (AGB) stars can experience proton ingestion events (PIEs), leading to a rich nucleosynthesis. During a PIE, the intermediate neutron capture process (i-process) develops, leading to the production of trans-iron elements.
Arthur Choplin, Lionel Siess, Stephane Goriely, Sebastien Martinet   +3 more
doaj   +1 more source

Neutrinos and nucleosynthesis in supernova

Journal of Physics: Conference Series, 2006
The type II supernova is considered as a candidate site for the production of heavy elements. The nucleosynthesis occurs in an intense neutrino flux, we calculate the electron fraction in this environment.
Solis, U., D'Olivo, J. C., Cabral-Rosetti, L. G.   +2 more
openaire   +2 more sources

PRIMORDIAL NUCLEOSYNTHESIS REDUX

The Astrophysical Journal, 1991
The abundances of D, He-3, He-4, and Li-7, are presently recalculated within the framework of primordial nucleosynthesis in the standard hot big band model, in order to estimate the primordial abundances of the light elements. A comparison between theory and experiment demonstrates the consistency of standard model predictions; the baryon density ...
Terry P. Walker, Gary Steigman, Ho-Shik Kang, David M. Schramm, Keith A. Olive   +4 more
openaire   +1 more source

The Impact of Recent LUNA Measurements of NeNa Reactions on ²⁶Al Stellar Nucleosynthesis

Universe
Recent measurements performed by the LUNA(Laboratory for Underground Nuclear Astrophysics) collaboration between 2019 and 2024 have provided the most precise direct determinations to date of several key reaction rates in the NeNa cycle, specifically the ...
Umberto Battino, Tommaso Gallo, Diego Vescovi, Sergio Cristallo, Andreas Best, Oscar Straniero, Eliana Masha, Erin R. Higgins, Raphael Hirschi   +8 more
doaj   +1 more source

Chemical evolution and kilonova implications of post-merger accretion disk winds

Astronomy & Astrophysics
Context. Several gamma-ray bursts (GRBs) have recently been associated with kilonova emission. We study the mechanisms that account for this effect by means of the radioactive decay of elements synthesized in accretion disk winds. Aims.
Janiuk Agnieszka, Saji Joseph, Urrutia Gerardo   +2 more
doaj   +1 more source

Observational signatures and constraints on the intermediate neutron-capture process

Astronomy & Astrophysics
Context. Observational abundances of carbon enhanced metal-Poor (CEMP) stars with patterns in between those produced by the rapid (r) and slow (s) nucleosynthesis processes (CEMP-rs stars) are currently invoked as evidence of synthesis via the ...
Giribaldi R. E., Vescovi D., Magrini L., Cristallo S., D’Orazi V., Piersanti L., Cornejo Espinoza D., Randich S., Baratella M.   +8 more
doaj   +1 more source