Results 51 to 60 of about 67,641 (245)

Nucleosynthesis and Kilonovae from Strange Star Mergers

Universe, 2019
In this talk, we summarize the work in progress toward a full characterization of strange star−strange star (SS−SS) mergers related to the GW/GRB/kilonova events.
J. E. Horvath, O. G. Benvenuto, E. Bauer, L. Paulucci, A. Bernardo, H. R. Viturro   +5 more
doaj   +1 more source

Indirect Measurements of n- and p-Induced Reactions of Astrophysical Interest on Oxygen Isotopes

Frontiers in Astronomy and Space Sciences, 2020
Observations of abundances and isotopic ratio determinations in stars yield powerful constraints on stellar models. In particular, the oxygen isotopic ratios are of particular interest because they are affected not only by nucleosynthesis but also by ...
M. L. Sergi, M. L. Sergi, G. L. Guardo, G. L. Guardo, M. La Cognata, M. Gulino, M. Gulino, J. Mrazek, S. Palmerini, S. Palmerini, C. Spitaleri, C. Spitaleri, M. Wiescher   +12 more
doaj   +1 more source

Positron Transport and Annihilation in the Galactic Bulge

Galaxies, 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

Massive Star Modeling and Nucleosynthesis

Frontiers 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

QUÍMICA ESTELAR E ESTRELAS APOCALÍPTICAS: ESTUDO COMPARATIVO

Colloquium 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, Gabriele Marques Stunges, Éderson da Silva Stelato, Maria Salete Vaceli Quintilio   +3 more
doaj   +1 more source

Non-universal scalar-tensor theories and big bang nucleosynthesis [PDF]

, 2008
We investigate the constraints that can be set from big-bang nucleosynthesis on two classes of models: extended quintessence and scalar-tensor theories of gravity in which the equivalence principle between standard matter and dark matter is violated.
Alain Coc, B. D. Fields, C. Will, C. M. Will, Elisabeth Vangioni, I. I. Shapiro, J.-P. Uzan, J. D. Barrow, J. D. Barrow, Jean-Philippe Uzan, K. Arai, Keith A. Olive, M. Fierz   +12 more
core   +3 more sources

Nuclear reactions involving light elements & BBN [PDF]

EPJ 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

Neutron-Driven Nucleosynthesis in Stellar Plasma

Frontiers in Physics, 2022
A large uncertainty for the slow neutron capture nucleosynthesis (s-process) models is caused by the amount of neutrons available to the process itself.
R. Spartà, M. La Cognata, G. L. Guardo, G. L. Guardo, S. Palmerini, S. Palmerini, M. L. Sergi, M. L. Sergi, G. D’Agata, G. D’Agata, L. Lamia, L. Lamia, L. Lamia, D. Lattuada, D. Lattuada, A. A. Oliva, A. A. Oliva, R. G. Pizzone, G. G. Rapisarda, G. G. Rapisarda, S. Romano, S. Romano, S. Romano, A. Tumino, A. Tumino   +24 more
doaj   +1 more source

Neutrino Effects in Nucleosynthesis [PDF]

, 2000
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
Haxton, W. C.
core   +3 more sources

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

Frontiers 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, Domenico Santonocito, Simone Amaducci, Luigi Celona, Alessio Galatà, Alain Goasduff, Giorgio Sebastiano Mauro, Maria Mazzaglia, Bharat Mishra, Daniel R. Napoli, Angelo Pidatella, Giuseppe Torrisi, David Mascali   +12 more
doaj   +1 more source