| タイトル | Coronal density and temperature structure from coordinated observations associated with the total solar eclipse of 1988 March 18 |
| 著者（英） | Orrall, F. Q.; Altrock, R. C.; Fisher, R. R.; Rottman, G. J.; Guhathakurta, M. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1992-04-01 |
| 言語 | eng |
| 内容記述 | This paper explores and compares diagnostics for temperature and density within large-scale structures of the inner corona based on cospatial and cotemporal spectrophotometric observations made at the time of the total solar eclipse of 1988 March 17/18. In the analysis a determination of plasma temperature T can be derived unambiguously from the intensity ratios Fe XIV/XUV or Fe XIV/Fe X since all the emission lines come from the ionized state of Fe and the ratios are only weakly dependent on density. These temperatures and the densities found in well-defined large-scale coronal structures are discussed. The emission-line temperature is found to be high (local maxima) in the coronal structures with enhanced white-light emission and associated with new cycle high-latitude magnetic fields separated from the old cycle polar field of opposite polarity. Also the average of the ratio of scale-height temperature/temperature over the entire range of position angle is roughly unity although the ratio is higher than unity (1.3-1.6) in the three most prominent streamers. |
| NASA分類 | SOLAR PHYSICS |
| レポートNO | 92A33036 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/328108 |
