Results 1 to 10 of about 34,280 (178)

Helioseismic inference of the solar radiative opacity [PDF]

Nature Communications
The Sun is the most studied of all stars, and thus constitutes a benchmark for stellar models. However, our vision of the Sun is still incomplete, as illustrated by the current debate on its chemical composition.
Gaël Buldgen, Jean-Christophe Pain, Philippe Cossé, Christophe Blancard, Franck Gilleron, Anil K. Pradhan, Christopher J. Fontes, James Colgan, Arlette Noels, Jørgen Christensen-Dalsgaard, Morgan Deal, Sergey V. Ayukov, Vladimir A. Baturin, Anna V. Oreshina, Richard Scuflaire, Charly Pinçon, Yveline Lebreton, Thierry Corbard, Patrick Eggenberger, Peter Hakel, David P. Kilcrease   +20 more
doaj   +3 more sources

Olivine’s high radiative conductivity increases slab temperature by up to 200K [PDF]

Nature Communications
The thermal evolution of slabs governs their subduction dynamics and the transport of water into Earth’s interior. However, current slab subduction models often neglect the contribution of radiative thermal conductivity (i.e., heat transport by light ...
Enrico Marzotto, Alexander Koptev, Sergio Speziale, Monika Koch-Müller, Nada Abdel-Hak, Sarah B. Cichy, Sergey S. Lobanov   +6 more
doaj   +2 more sources

OPserver: interactive online-computations of opacities and radiative accelerations [PDF]

, 2007
Codes to compute mean opacities and radiative accelerations for arbitrary chemical mixtures using the Opacity Project recently revised data have been restructured in a client--server architecture and transcribed as a subroutine library.
A. Bellorín, A. K. Pradhan, Antia, Asplund, Badnell, Bahcall, Bahcall, Bahcall, Bahcall, Bourge, C. J. Zeippen, C. Mendoza, Christensen-Dalsgaard, Delahaye, Delahaye, E. Palacios, F. Delahaye, Gonzalez, Iglesias, J. González, Korn, Kurtz, L. S. Rodríguez, M. J. Seaton, M. Meléndez, Metcalfe, Michaud, P. Buerger, Richard, Seaton, Seaton, Seaton, Seaton   +32 more
core   +3 more sources

Stellar Pulsation and Evolution: A Combined Theoretical Renewal and Updated Models (SPECTRUM). I. Updating Radiative Opacities for Pulsation Models of Classical Cepheid and RR-Lyrae [PDF]

The Astrophysical Journal
Pulsating stars are universally recognized as precise distance indicators and tracers of stellar populations. Their variability, combined with well-defined relationships between pulsation properties and intrinsic evolutionary parameters such as ...
Giulia De Somma, Marcella Marconi, Santi Cassisi, Roberto Molinaro   +3 more
doaj   +3 more sources

Radiative cooling textiles using industry-standard particle-free nonporous micro-structured fibers [PDF]

Nanophotonics
Thermal radiation is a major dissipative pathway for heat generated by the human body and offers a significant thermoregulation mechanism over a wide range of conditions.
Catrysse Peter B., Fan Shanhui
doaj   +2 more sources

Medium-induced radiative kernel with the Improved Opacity Expansion

Journal of High Energy Physics, 2021
We calculate the fully differential medium-induced radiative spectrum at next-to-leading order (NLO) accuracy within the Improved Opacity Expansion (IOE) framework.
João Barata, Yacine Mehtar-Tani, Alba Soto-Ontoso, Konrad Tywoniuk   +3 more
doaj   +1 more source

Pseudo-Relativistic Hartree–Fock and Fully Relativistic Dirac–Hartree–Fock Calculations of Radiative Parameters in the Fifth Spectrum of Lutetium (Lu V)

Atoms, 2022
Using two independent theoretical methods based on the pseudo-relativistic Hartree–Fock (HFR) and the fully relativistic Multiconfigurational Dirac–Hartree–Fock (MCDHF) approaches, we computed the radiative parameters (transition probabilities and ...
Lucas Maison, Helena Carvajal Gallego, Pascal Quinet   +2 more
doaj   +1 more source

The Inhomogeneity Effect. III. Weather Impacts on the Heat Flow of Hot Jupiters

The Astrophysical Journal, 2023
The interior flux of a giant planet impacts atmospheric motion, and the atmosphere dictates the interior’s cooling. Here we use a non-hydrostatic general circulation model (Simulating Non-hydrostatic Atmospheres on Planets) coupled with a multi-stream ...
Xi Zhang, Cheng Li, Huazhi Ge, Tianhao Le   +3 more
doaj   +1 more source

Ideas and Tools for Error Detection in Opacity Databases

Atoms, 2023
In this article, we propose several ideas and tools in order to check the reliability of radiative opacity and atomic physics databases. We first emphasize that it can be useful to verify that mathematical inequalities, which impose lower and upper ...
Jean-Christophe Pain, Patricia Croset
doaj   +1 more source

How Well do We Understand the Planck Feedback?

Journal of Advances in Modeling Earth Systems, 2023
A reference or “no‐feedback” radiative response to warming is fundamental to understanding how much global warming will occur for a given change in greenhouse gases or solar radiation incident on the Earth.
Timothy W. Cronin, Ishir Dutta
doaj   +1 more source