Results 81 to 90 of about 52,014 (259)
R-process Nucleosynthesis of Subminimal Neutron Star Explosions
The Astrophysical Journal, 2023 We show that a minimum-mass neutron star undergoes delayed explosion after mass removal from its surface. We couple the Newtonian hydrodynamics to a nuclear reaction network of ∼4500 isotopes to study the nucleosynthesis and neutrino emission during the ...
Chun-Ming Yip +3 more
doaj +1 more source
Pediatric Blood &Cancer, Volume 71, Issue 11, November 2024.Abstract An attractive flower from the island of Madagascar has in part saved the lives of thousands of children with acute lymphoblastic leukemia (ALL). Random mutations and alterations to the genome led to the evolution of genes encoding enzymes, which would provide the periwinkle flower an arsenal of secondary metabolites to survive within the ...
Jeffrey W. Taub +5 more
wiley +1 more source
The s-process Nucleosynthesis [PDF]
Proceedings of the International Astronomical Union, 2005 Theoretical as well as observational aspects of the s-process nucleosynthesis are reviewed. The classical site-independent s-process model as well as the s-process in massive stars are shortly described. A special attention is paid to the nucleosynthesis taking place in AGB stars and the extra-mixing invoked to explain the production of neutrons in the
Lionel Siess, Stéphane Goriely
openaire +2 more sources
Challenges and Requirements in High-Precision Nuclear Astrophysics Experiments
Universe, 2022 In the 21th century astronomical observations, as well as astrophysical models, have become impressively precise. For a better understanding of the processes in stellar interiors, the nuclear physics of astrophysical relevance—known as nuclear ...
György Gyürky
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, 2022 As the early universe expands and cools the rates of the weak interactions that keep neutrinos in thermal equilibrium with the matter and the related rates of the reactions that inter-convert neutrons and protons decrease. Eventually, these rates fall below the expansion rate -- they freeze out.
Grohs, Evan, Fuller, George M.
openaire +2 more sources
Chemical Tracing and the Origin of Carbon in the Galactic Disk
Universe, 2022 A basic problem in studies of the evolution of chemical elements in galaxies is the uncertainties in the yields of elements produced by different types of stars.
Bengt Gustafsson
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Second Order Corrections to the Magnetic Moment of Electron at Finite Temperature
, 2013 Magnetic moment of electron at finite temperature is directly related to the modified electron mass in the background heat bath. Magnetic moment of electron gets modified when it couples with the magnetic field at finite temperature through its ...
MAHNAZ Q. HASEEB +3 more
core +1 more source
Geostandards and Geoanalytical Research, Volume 48, Issue 2, Page 331-343, June 2024.Key Points Corrected for the Earth's magnetic field, the SHRIMP's IMF depends on the mineral species, not the chemical composition. The IMF arises from the force constant difference between "hard" and "soft" bonds, which is characteristic of each mineral. This permitted the calculation of IMF‐correction factors for most common Mg‐bearing minerals.
Fernando Bea +7 more
wiley +1 more source
Extremely Metal-Poor Asymptotic Giant Branch Stars
Universe, 2022 Little is known about the first stars, but hints on this stellar population can be derived from the peculiar chemical composition of the most metal-poor objects in the Milky Way and in resolved stellar populations of nearby galaxies.
Mario Cirillo +2 more
doaj +1 more source
The bulk mineralogy, elemental composition, and water content of the Winchcombe CM chondrite fall
Meteoritics &Planetary Science, Volume 59, Issue 5, Page 1006-1028, May 2024.Abstract On the microscale, the Winchcombe CM carbonaceous chondrite contains a number of lithological units with a variety of degrees of aqueous alteration. However, an understanding of the average hydration state is useful when comparing to other meteorites and remote observations of airless bodies.
H. C. Bates +8 more
wiley +1 more source