Results 41 to 50 of about 52,754 (240)

Positron Transport and Annihilation in the Galactic Bulge

open access: yesGalaxies, 2018
The annihilation of positrons in the Milky Way Galaxy has been observed for ∼50 years; however, the production sites of these positrons remains hard to identify.
Fiona Helen Panther
doaj   +1 more source

Insights into AGB Nucleosynthesis Thanks to Spectroscopic Abundance Measurements in Intrinsic and Extrinsic Stars

open access: yesUniverse, 2022
The foundations of stellar nucleosynthesis have been established more than 70 years ago. Since then, much progress has been made, both on the theoretical side, with stellar evolution and nucleosynthesis models of increasing complexity, using more and ...
Sophie Van Eck   +2 more
doaj   +1 more source

QUÍMICA ESTELAR E ESTRELAS APOCALÍPTICAS: ESTUDO COMPARATIVO

open access: yesColloquium Exactarum, 2012
All atoms existing in the Universe, except Hydrogen (H) and helium (He), arise from processes occurring in stars and their evolution. The stars transmute the H and He in other heavier elements through nuclear fusion and its process rolling, filling and ...
Nikele Milani   +3 more
doaj   +1 more source

Nuclear reactions involving light elements & BBN [PDF]

open access: yesEPJ Web of Conferences
Light elements play a key role in different scenario in astrophysics, ranging from primordial nucleosynthesis up to stellar nucleosynthesis and cosmic ray nucleosynthesis.
Lamia L.
doaj   +1 more source

Massive Star Modeling and Nucleosynthesis

open access: yesFrontiers in Astronomy and Space Sciences, 2021
After a brief introduction to stellar modeling, the main lines of massive star evolution are reviewed, with a focus on the nuclear reactions from which the star gets the needed energy to counterbalance its gravity.
Sylvia Ekström
doaj   +1 more source

Nucleosynthesis and Mixing in Cassiopeia A [PDF]

open access: yesThe Astrophysical Journal, 2000
13 pages, including 3 postscript figs, LaTeX.
John P. Hughes   +3 more
openaire   +3 more sources

Design study of a HPGe detector array for β-decay investigation in laboratory ECR plasmas

open access: yesFrontiers in Physics, 2022
In the frame of the PANDORA project, a new experimental approach aims at measuring in-plasma β-decay rate as a function of thermodynamical conditions of the environment, namely a laboratory magnetized plasma able to mimic some stellar-like conditions ...
Eugenia Naselli   +12 more
doaj   +1 more source

Nucleosynthesis in O-Ne-Mg Supernovae [PDF]

open access: yes, 2007
We have studied detailed nucleosynthesis in the shocked surface layers of an Oxygen-Neon-Magnesium core collapse supernova with an eye to determining if the conditions are suitable for r process nucleosynthesis.
B. Müller   +6 more
core   +3 more sources

Nucleosynthesis [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 1984
This article provides a review of the present status of research in nucleosynthesis, with emphasis on problems of nucleosynthesis in stellar and supernova environments. The authors begin by surveying abundance patterns in the Sun, our galaxy and other galaxies, calling attention to the manner in which such data serve to guide and to restrict ...
openaire   +2 more sources

Pygmy resonances and nucleosynthesis [PDF]

open access: yesEPJ Web of Conferences, 2015
A microscopic theoretical approach based on a self-consistent density functional theory for the nuclear ground state and QRPA formalism extended with multi-phonon degrees of freedom for the nuclear excited states is implemented in investigations of new low-energy modes called pygmy resonances.
Horst Lenske, N. Tsoneva
openaire   +4 more sources

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