Results 91 to 100 of about 112,099 (203)

Explosive nucleosynthesis and Type I supernovae

The Astrophysical Journal, 1984
On combine un modele d'ejection d'une deflagration particuliere de carbone pour des supernovae de type I avec un modele d'ejection d'une etoile massive. On montre que les supernovae de type I peuvent apporter des contributions importantes a la nucleosynthese ...
K. Nomoto, F.-K. Thielemann, J. C. Wheeler   +2 more
openaire   +1 more source

Direct Measurement of 59Cu(p,α)56Ni Precludes a Strong NiCu Cycle in Type-I X-Ray Bursts

The Astrophysical Journal
Model-observation comparisons of type-I X-ray bursts (XRBs) can reveal the properties of accreting neutron star systems, including the neutron star compactness. XRBs are powered by nuclear burning, and a handful of reactions have been shown to impact the
N. Bhathi, J. S. Randhawa, R. Kanungo, J. Refsgaard, M. Alcorta, T. Ahn, C. Andreoiu, D. Bardayan, S. S. Bhattacharjee, B. Davids, G. Christian, A. A. Chen, R. Coleman, P. E. Garrett, G. F. Grinyer, E. Gyabeng Fuakye, G. Hackman, R. Jain, K. Kapoor, R. Krücken, A. Laffoley, A. Lennarz, J. Liang, Z. Meisel, A. Psaltis, A. Radich, M. Rocchini, J. S. Rojo, N. Saei, M. Saxena, M. Singh, C. E. Svensson, P. Subramaniam, A. Talebitaher, S. Upadhyayula, C. Waterfield, J. Williams, M. Williams, M. A. Zubair   +38 more
doaj   +1 more source

On the roles of function and selection in evolving systems. [PDF]

Proc Natl Acad Sci U S A, 2023
Wong ML, Cleland CE, Arend D, Bartlett S, Cleaves HJ, Demarest H, Prabhu A, Lunine JI, Hazen RM.   +8 more
europepmc   +1 more source

Radioactive ion beams and explosive nucleosynthesis

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1991
Abstract Explosive hydrogen burning involves (p, γ) reactions on proton-rich, unstable nuclei. The knowledge of the reaction rates for these reactions is important to calculate the energy production and reaction paths in different astrophysical scenarios, e.g. nova, supernova and supermassive stars.
J. Görres, M. Wiescher
openaire   +1 more source

Effects of Hoyle state de-excitation on νp–process nucleosynthesis and Galactic chemical evolution

Physics Letters B
The particle-induced hadronic de-excitation of the Hoyle state in 12C induced by inelastic scattering in a hot and dense plasma can enhance the triple-alpha reaction rate.
Hirokazu Sasaki, Yuta Yamazaki, Toshitaka Kajino, Grant J. Mathews   +3 more
doaj   +1 more source

Phosphorus-bearing molecules PO and PN at the edge of the Galaxy. [PDF]

Nature, 2023
Koelemay LA, Gold KR, Ziurys LM.
europepmc   +1 more source

The weak s-process in massive stars, product for galactic chemical evolution and seed for explosive nucleosynthesis

The weak s-process in massive stars plays a crucial role in the nucleosynthesis of heavy elements between Fe and Sr. It is traditionally viewed as occurring primarily during the pre-supernova (pre-SN) phase, with minimal alteration from the ensuing core ...
Marco Pignatari, Lorenzo Roberti, Taoyu Jiao   +2 more
core   +1 more source

Cluster Analysis of Presolar Silicon Carbide Grains: Evaluation of Their Classification and Astrophysical Implications. [PDF]

Astrophys J Lett, 2021
Boujibar A, Howell S, Zhang S, Hystad G, Prabhu A, Liu N, Stephan T, Narkar S, Eleish A, Morrison SM, Hazen RM, Nittler LR.   +11 more
europepmc   +1 more source

Recent results in explosive and s-process nucleosynthesis from measurements on radioactive and stable targets

, 1993
Measurements of (n,p) and (n,{alpha}) cross sections are crucial for a better understanding of many scenarios of nucleosynthesis. Current problems in which such reactions play a roll include the possible synthesis of heavy element during the big bang ...
Koehler, P. E., Schatz, H., Kaeppeler, F.   +2 more
core  

Overview of stellar nucleosynthesis in explosive environments and recent experimental highlights

International audienceExplosive stellar environments such as neutron star mergers, supernovae and X-ray bursts contribute significantly to the synthesis of many chemical elements known in the universe.
Avila, M.L, Lopez-Saavedra, E, M. L. Avila, Alruwaili, M, Chipps, K.A, K. A. Chipps, Anastasiou, M, Bhatt, K, Fougères, C, Rehm, K.E, H. Jayatissa, D. Santiago-Gonzalez, M. Anastasiou, M. Alruwaili, E. Lopez-Saavedra, C. Fougères, A. M. Laird, K. Bhatt, Laird, A.M, Santiago-Gonzalez, D, Jayatissa, H, K. E. Rehm   +21 more
core   +1 more source