English
Related papers

Related papers: SkyNet: A modular nuclear reaction network library

200 papers

Chemical abundances and abundance ratios measured in galaxies provide precious information about the mechanisms, modes and time scales of the assembly of cosmic structures. Yet, the nucleogenesis and chemical evolution of elements heavier…

Astrophysics of Galaxies · Physics 2019-12-04 Donatella Romano , Francesca Matteucci , Zhi-Yu Zhang , Rob J. Ivison , Paolo Ventura

Heavy elements like gold, platinum or uranium are produced in the r-process, which needs neutron-rich and explosive environments. Neutron star mergers are a promising candidate for an r-process site. They exhibit three different channels…

Solar and Stellar Astrophysics · Physics 2015-09-28 Dirk Martin , Albino Perego , Almudena Arcones , Oleg Korobkin , Friedrich-Karl Thielemann

The focus of the present review is the production of the heaviest elements in nature via the r-process. A correct understanding and modeling requires the knowledge of nuclear properties far from stability and a detailed prescription of the…

Astrophysics · Physics 2009-10-31 K. -L. Kratz , B. Pfeiffer , F. -K. Thielemann , W. B. Walters

The Nuclear Science References (NSR) database together with its associated Web interface, is the world's only comprehensive source of easily accessible low- and intermediate-energy nuclear physics bibliographic information for more than…

Data Analysis, Statistics and Probability · Physics 2015-03-18 B. Pritychenko , E. Betak , M. A. Kellett , B. Singh , J. Totans

We demonstrate that nucleosynthesis in rapid, high-entropy expansions of proton-rich matter from high temperature and density can result in a wider variety of abundance patterns than heretofore appreciated. In particular, such expansions…

Astrophysics · Physics 2009-11-10 G. C. Jordan , B. S. Meyer

In the upcoming decades, the KM3NeT detectors will produce valuable data that can be used in various scientific contexts from astro- and particle physics to environmental and Earth and Sea science. Based on the Open Science policy…

Instrumentation and Methods for Astrophysics · Physics 2021-10-27 Jutta Schnabel , Piotr Kalaczyński , Cristiano Bozza , Tamas Gal

In standard Convolutional Neural Networks (CNNs), the receptive fields of artificial neurons in each layer are designed to share the same size. It is well-known in the neuroscience community that the receptive field size of visual cortical…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Xiang Li , Wenhai Wang , Xiaolin Hu , Jian Yang

The common envelop jet supernovae (CEJSN) r-process scenario has been proposed as an r-process nucleosynthesis site in the past decade. Jets launched by a neutron star that spirals-in inside the core of a red supergiant star in a common…

High Energy Astrophysical Phenomena · Physics 2023-10-16 Shilun Jin , Noam Soker

Galaxy formation and evolution critically depend on understanding the complex photo-chemical processes that govern the evolution and thermodynamics of the InterStellar Medium (ISM). Computationally, solving chemistry is among the most heavy…

Astrophysics of Galaxies · Physics 2024-02-21 Lorenzo Branca , Andrea Pallottini

We study the sensitivity of presupernova evolution and supernova nucleosynthesis yields of massive stars to variations of the helium-burning reaction rates within the range of their uncertainties. We use the current solar abundances from…

Solar and Stellar Astrophysics · Physics 2013-08-21 Christopher West , Alexander Heger , Sam M. Austin

We perform a comparative analysis of nucleosynthesis yields from binary neutron star (BNS) mergers, black hole-neutron star (BHNS) mergers, and core-collapse supernovae (CCSNe) with the goal of determining which are the most dominant…

High Energy Astrophysical Phenomena · Physics 2023-08-30 Nick Ekanger , Mukul Bhattacharya , Shunsaku Horiuchi

In many scientific fields, there is an interest in understanding the way in which complex chemical networks evolve. The chemical networks which researchers focus upon, have become increasingly complex and this has motivated the development…

This chapter will go through the important nuclear reactions in stellar evolution and explosions, passing through the individual stellar burning stages and also explosive burning conditions. To follow the changes in the composition of…

Solar and Stellar Astrophysics · Physics 2024-04-23 Friedrich-Karl Thielemann , Thomas Rauscher

Context: It is well known that the so-called s-process is responsible for the production of neutron-rich trans-iron elements, that form the bulk of the "heavy nuclides" (i.e. nuclides more massive than the iron-group nuclei) in the…

Solar and Stellar Astrophysics · Physics 2012-03-21 M. L. Pumo

Polymer nanocomposites (PNCs) offer a broad range of thermophysical properties that are linked to their compositions. However, it is challenging to establish a universal composition-property relation of PNCs due to their enormous…

Materials Science · Physics 2022-08-25 Kumar Ayush , Abhishek Seth , Tarak K Patra

We present a nucleosynthesis calculation of a 25 solar mass star of solar composition that includes all relevant isotopes up to polonium. In particular, all stable isotopes and necessary nuclear reaction rates are covered. We follow the…

Astrophysics · Physics 2015-06-24 A. Heger , S. E. Woosley , T. Rauscher , R. D. Hoffman , M. M. Boyes

Recent studies suggest that binary neutron star (NS-NS) mergers robustly produce the heavy r-process nuclei above the atomic mass number A ~ 130 because of their ejecta consisting of almost pure neutrons (electron fraction of Y_e < 0.1).…

Solar and Stellar Astrophysics · Physics 2015-06-18 Shinya Wanajo , Yuichiro Sekiguchi , Nobuya Nishimura , Kenta Kiuchi , Koutarou Kyutoku , Masaru Shibata

Radioactivity was discovered as a by-product of searching for elements with suitable chemical properties. Understanding its characteristics led to the development of nuclear physics, understanding that unstable configurations of nucleons…

High Energy Astrophysical Phenomena · Physics 2018-11-28 Roland Diehl

KNET is a general-purpose shell for constructing expert systems based on belief networks and decision networks. Such networks serve as graphical representations for decision models, in which the knowledge engineer must define clearly the…

Artificial Intelligence · Computer Science 2013-04-10 R. Martin Chavez , Gregory F. Cooper

We investigate the metallicity effect (measured by the original 22Ne content) on the detailed nucleosynthetic yields for 3D hydrodynamical simulations of the thermonuclear burning phase in SNe Ia. Calculations are based on post-processes of…

Astrophysics · Physics 2009-11-11 C. Travaglio , W. Hillebrandt , M. Reinecke
‹ Prev 1 8 9 10 Next ›