| タイトル | A hydrodynamic approach to cosmology - Methodology |
| 著者（英） | Cen, Renyue |
| 著者所属（英） | Princeton Univ. Observatory |
| 発行日 | 1992-02-01 |
| 言語 | eng |
| 内容記述 | The present study describes an accurate and efficient hydrodynamic code for evolving self-gravitating cosmological systems. The hydrodynamic code is a flux-based mesh code originally designed for engineering hydrodynamical applications. A variety of checks were performed which indicate that the resolution of the code is a few cells, providing accuracy for integral energy quantities in the present simulations of 1-3 percent over the whole runs. Six species (H I, H II, He I, He II, He III) are tracked separately, and relevant ionization and recombination processes, as well as line and continuum heating and cooling, are computed. The background radiation field is simultaneously determined in the range 1 eV to 100 keV, allowing for absorption, emission, and cosmological effects. It is shown how the inevitable numerical inaccuracies can be estimated and to some extent overcome. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 92A22314 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/329792 |
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