تقرير
QSO emission line profiles from Keplerian cloud ensembles
| العنوان: | QSO emission line profiles from Keplerian cloud ensembles |
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| المؤلفون: | Bradley, S. E, Puetter, R. C |
| المصدر: | Astronomy and Astrophysics. 165(1-2) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 1986. |
| سنة النشر: | 1986 |
| مصطلحات موضوعية: | Astrophysics |
| الوصف: | Quasar broad emission line profile calculations are presented for spherically symmetric ensembles of flattened broad-line clouds in elliptical Keplerian orbits. In general, it is found that high eccentricity monoenergetic orbital ensembles tend to provide more acceptable profiles than low eccentricity monoenergetic ensembles. The investigation of elliptical cloud orbits evolving under the influence of Poynting-Robertson drag or drag from an intercloud media shows that acceptable line profiles naturally result from the decay of initially monoenergetic, high eccentricity ensembles independent of the assumed emission anisotropy, provided the drag is not so great as to cause the immediate capture or disruption of the clouds. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 0004-6361 |
| URL الوصول: | https://ntrs.nasa.gov/citations/19870029809 |
| ملاحظات: | NSF AST-79-22032 NAS5-24463 NAGW-30 |
| رقم الأكسشن: | edsnas.19870029809 |
| قاعدة البيانات: | NASA Technical Reports |
| تدمد: | 00046361 |
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