Results 101 to 110 of about 53,561 (244)

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

Nucleosynthesis Predictions and High-Precision Deuterium Measurements

Universe, 2017
Two new high-precision measurements of the deuterium abundance from absorbers along the line of sight to the quasar PKS1937–1009 were presented. The absorbers have lower neutral hydrogen column densities (N(HI) ≈ 18 cm − 2 ) than for previous ...
Signe Riemer-Sørensen, Espen Sem Jenssen   +1 more
doaj   +1 more source

Nucleosynthesis and Gamma-Ray Line Spectroscopy with INTEGRAL

, 2011
Cosmic nucleosynthesis co-produces unstable isotopes, which emit characteristic gamma-ray emission lines upon their radioactive decay that can be measured with SPI on INTEGRAL.
Diehl, Roland
core  

Effects of a torsion field on Big Bang nucleosynthesis

, 1999
In this paper it is investigated whether torsion, which arises naturally in most theories of quantum gravity, has observable implications for the Big Bang nucleosynthesis.
C. N. Yang, D. Sciama, E. Cremmer, G. Papadopoulos, I. L. Buchbinder, J. M. Cline, M. Bruggen, M. Brüggen, M. Kalb, M. Khlopov, P. J. E. Peebles, P. S. Howe, R. Barbieri, R. T. Hammond, R. T. Hammond, R. T. Hammond, S. Capozziello, T. Kibble, X. Shi   +18 more
core   +1 more source

Big-Bang Nucleosynthesis

, 2014
15 pages, 1 (new) figure; mini-review in the Review of Particle Physics 2014 by the Particle Data Group (http://pdg.lbl.gov/)
Fields, B, Molaro, P, Sarkar, S
openaire   +3 more sources

Baryon inhomogeneity generation via cosmic strings at QCD scale and its effects on nucleosynthesis

, 2002
We have earlier shown that cosmic strings moving through the plasma at the time of a first order quark-hadron transition in the early universe can generate large scale baryon inhomogeneities.
A. Heckler, A. Sornborger, A. Stebbins, Ajit M. Srivastava, B. Allen, B. Banerjee, B. Beinlich, B. Kampfer, B. Layek, Biswanath Layek, D. P. Bennett, D. V. Gal’tsov, E. Witten, G. M. Fuller, H. Kurki-Suonio, J. H. Applegate, J. Ignatius, J. Ignatius, J. R. Gott III, K. Jedamzik, K. Kainulainen, K. Kajantie, K. Kajantie, K. Sumiyoshi, L. Pogosian, M. B. Christiansen, N. Deruelle, S. A. Bonometto, Soma Sanyal, W. A. Hiscock, W. A. Hiscock   +30 more
core   +3 more sources

Type Ia Supernovae as Sites of p-process: Two-Dimensional Models Coupled to Nucleosynthesis

, 2011
We explore SNe Ia as p-process sites in the framework of two-dimensional SN Ia delayed detonation and pure deflagration models. The WD precursor is assumed to have reached the Chandrasekhar mass in a binary system by mass accretion from a giant/main ...
Arcones, Arlandini, Arnould, Busso, C. Travaglio, Chamulak, Contardo, Cristallo, Dillmann, Dillmann, Dillmann, Domínguez, F. K. Röpke, Fisker, Frölich, Fujimoto, Gallino, Goriely, Hayakawa, Hayakawa, Herwig, Herwig, Howard, Iwamoto, Jackson, Khokhlov, Kusakabe, Langer, Maeda, Nagataki, Nishimura, Piro, Piro, Pruet, R. Gallino, Rauscher, Rayet, Rayet, Reinecke, Roberts, Röpke, Röpke, Röpke, Sim, Sugimoto, The, Theis, Ulrich, W. Hillebrandt, Wanajo, Wanajo, Wanajo, Woosley, Woosley, Woosley   +54 more
core   +1 more source

Structure effects of 20N in elemental abundance estimations during explosive nucleosynthesis [PDF]

EPJ Web of Conferences
Most nuclei far from the valley of stability, and typically near the drip lines, exhibit exotic features that have challenged our current understanding of nuclear structure.
Barman Jinti, Chatterjee Rajdeep
doaj   +1 more source

Coulomb screening in linear coasting nucleosynthesis

, 2015
We investigate the impact of coulomb screening on primordial nucleosynthesis in a universe having scale factor that evolves linearly with time. Coulomb screening affects primordial nucleosynthesis via enhancement of thermonuclear reaction rates.
Lohiya, Daksh, Singh, Parminder
core  

The Physics of Core-Collapse Supernovae: Explosion Mechanism and Explosive Nucleosynthesis

Universe
Recent developments in multi-dimensional simulations of core-collapse supernovae have considerably improved our understanding of this complex phenomenon.
Luca Boccioli, Lorenzo Roberti
doaj   +1 more source