Results 91 to 100 of about 53,561 (244)

The bulk mineralogy, elemental composition, and water content of the Winchcombe CM chondrite fall

open access: yesMeteoritics &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

Heavy Elements and Electromagnetic Transients from Neutron Star Mergers

open access: yesAnnalen der Physik, Volume 536, Issue 2, February 2024.
Astro‐(physics) has made major leaps forward through the combined information provided by both gravitational waves and electromagnetic emission from the first detected neutron star merger event. This review provides an up‐to‐date overview of today's understanding of neutron star mergers and their electromagnetic emission and it discusses possible ...
Stephan Rosswog, Oleg Korobkin
wiley   +1 more source

Direct and Indirect Measurements of the 19F(p,α)16O Reaction at Astrophysical Energies Using the LHASA Detector and the Trojan Horse Method

open access: yesUniverse
Fluorine is one of the most interesting elements in nuclear astrophysics. Its abundance can provide important hints to constrain the stellar models since fluorine production and destruction are strictly connected to the physical conditions inside the ...
Giovanni L. Guardo   +21 more
doaj   +1 more source

Neutrinos and nucleosynthesis in supernova

open access: yesJournal of Physics: Conference Series, 2006
The type II supernova is considered as a candidate site for the production of heavy elements. The nucleosynthesis occurs in an intense neutrino flux, we calculate the electron fraction in this environment.
Solis, U.   +2 more
openaire   +2 more sources

Modeling of Cosmogenic Cr Isotopes Produced in Lunar Rocks Compared With Existing Calculations and Measurements

open access: yesJournal of Geophysical Research: Planets, Volume 129, Issue 2, February 2024.
Abstract The nucleosynthetic Cr isotope anomalies provides useful information to trace the source and origin of extraterrestrial samples, but it is usually influenced by high‐energy cosmic rays, and evaluating such effect of cosmic rays in lunar samples is especially important.
Bailiang Liu   +5 more
wiley   +1 more source

Production of Lithium and Heavy Elements in AGB Stars Experiencing PIEs

open access: yesGalaxies
Asymptotic giant branch (AGB) stars can experience proton ingestion events (PIEs), leading to a rich nucleosynthesis. During a PIE, the intermediate neutron capture process (i-process) develops, leading to the production of trans-iron elements.
Arthur Choplin   +3 more
doaj   +1 more source

Absence of a Lower Limit on Omega_b in Inhomogeneous Primordial Nucleosynthesis

open access: yes, 1994
We show that a class of inhomogeneous big bang nucleosynthesis models exist which yield light-element abundances in agreement with observational constraints for baryon-to-photon ratios significantly smaller than those inferred from standard homogeneous ...
Fuller, G. M.   +2 more
core   +1 more source

Nuclear astrophysicists at war

open access: yesNatural Sciences, Volume 4, Issue 1, January 2024.
The Manhattan program not only opened the path to the nuclear age for humans, but also triggered a lot of new questions and research directions in nuclear physics and astrophysics that still inform the ideas in these fields today. Abstract The question of energy production in stars stimulated an entire generation of young physicists in the 1930s who ...
Michael Wiescher, Karlheinz Langanke
wiley   +1 more source

Machine learning opportunities for nucleosynthesis studies

open access: yesFrontiers in Astronomy and Space Sciences
Nuclear astrophysics is an interdisciplinary field focused on exploring the impact of nuclear physics on the evolution and explosions of stars and the cosmic creation of the elements.
Michael S. Smith, Dan Lu
doaj   +1 more source

Explosive Nucleosynthesis: What we learned and what we still do not understand

open access: yes, 2018
This review touches on historical aspects, going back to the early days of nuclear astrophysics, initiated by B$^2$FH and Cameron, discusses (i) the required nuclear input from reaction rates and decay properties up to the nuclear equation of state ...
A Arcones   +141 more
core   +1 more source

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