Results 11 to 20 of about 35,353 (312)
OPserver: interactive online-computations of opacities and radiative accelerations [PDF]
Monthly Notices of the Royal Astronomical Society, 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 +32 more
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Updated Opacity Project radiative accelerations [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Updated data for the calculation of radiative accelerations, grad, referred to as OP 2005, have been made generally available on the Web. They differ from the earlier 1997 OP data mainly in the inclusion of contributions from inner-shell processes. The frequency resolution used for OP 2005 is shown to be satisfactory except for extreme cases of low ...
M. J. Seaton
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Opacities for the solar radiative interior
The Astrophysical Journal, 1991 Opacities for the solar radiative interior are computed and compared to previous calculations. A significant enhancement of the Rosseland mean opacity near the bottom of the convection zone is reported when compared to the Los Alamos Astrophysical Opacity Library. The discrepancy is attributed mainly to the equation of state.
Carlos A. Iglesias, F. J. Rogers
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Effects of opacity temperature dependence on radiatively accelerated clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We study how different opacity–temperature scalings affect the dynamical evolution of irradiated gas clouds using time-dependent radiation-hydrodynamics simulations. When clouds are optically thick, the bright side heats up and expands, accelerating the cloud via the rocket effect. Clouds that become more optically thick as they
Sergei Dyda +2 more
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Helioseismic Tests of Radiative Opacities [PDF]
AIP Conference Proceedings, 2002 During the past fifteen years, thousands of solar acoustic oscillation modes have been measured to remarkable precision, in many cases to within 0.01%. These frequencies have been used to infer the interior structure of the sun and test the physical input to solar models. Here we summarize the procedures, input physics and assumptions for calculating a
Joyce Ann Guzik
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Opacity Project data on CD for mean opacities and radiative accelerations [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2005 All monochromatic opacity data from the Opacity Project (OP), together with all codes required for the calculation of mean opacities and radiative accelerations for any required chemical mixture, temperature and mass density, are being put on a 700-MB CD which will be made generally available.
M. J. Seaton
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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 +3 more
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Radiative Transfer with Opacity Distribution Functions: Application to Narrowband Filters [PDF]
The Astrophysical Journal Supplement Series, 2021 Abstract Modeling of stellar radiative intensities in various spectral passbands plays an important role in stellar physics. At the same time, direct calculation of the high-resolution spectrum and then integration of it over the given spectral passband is computationally demanding due to the vast number of atomic and molecular lines ...
L. S. Anusha +5 more
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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
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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
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