F
Forrest J. Rogers
Researcher at Lawrence Livermore National Laboratory
Publications - 82
Citations - 11474
Forrest J. Rogers is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Opacity & Equation of state. The author has an hindex of 38, co-authored 82 publications receiving 10935 citations. Previous affiliations of Forrest J. Rogers include University of Alberta.
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Updated Opal Opacities
TL;DR: The updated OPAL Rosseland mean opacities for Population I stars have been presented in this paper, where the main opacity changes are increases of as much as 20% for population I stars due to the explicit inclusion of 19 metals (compared to 12 metals in the earlier calculations).
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The Current State of Solar Modeling
Jørgen Christensen-Dalsgaard,Werner Däppen,S. V. Ajukov,E. Anderson,H. M. Antia,Sarbani Basu,V. A. Baturin,Gabrielle Berthomieu,Brian Chaboyer,S. M. Chitre,Arthur N. Cox,Pierre Demarque,J. Donatowicz,W. A. Dziembowski,M. Gabriel,Douglas Gough,David B. Guenther,Joyce A. Guzik,J. W. Harvey,Frank Hill,G. Houdek,Carlos A. Iglesias,Alexander G. Kosovichev,John Leibacher,Pierre Morel,C. R. Proffitt,Janine Provost,J. Reiter,Edward J. Rhodes,Forrest J. Rogers,Ian W. Roxburgh,Michael Thompson,Roger K. Ulrich +32 more
TL;DR: Data from the GONG project and other helioseismic experiments reveal subtle errors in the models, such as an excess in sound speed just beneath the convection zone, which is plausible that the sound-speed differences reflect weak mixing in stellar interiors.
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Updated and Expanded OPAL Equation-of-State Tables: Implications for Helioseismology
TL;DR: In this article, the OPAL equation-of-state (EOS) and opacity data were extended to include low-mass stars with mass less than 0.1 M. The EOS part of that effort now is complete, and the results are described herein.
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Opal equation-of-state tables for astrophysical applications
TL;DR: The OPAL EOS as discussed by the authors is based on an activity expansion of the grand canonical partition function of the plasma in terms of its fundamental constituents (electrons and nuclei), and the formation of composite particles and many-body effects on the internal bound states occur naturally in this approach.
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Radiative atomic Rosseland mean opacity tables
TL;DR: In this paper, the authors present new radiative Rosseland mean opacity tables calculated with the OPAL code developed independently at LLNL, which allow accurate interpolation in temperature, density, hydrogen mass fraction, as well as metal mass fraction.