Polygonal structures in galactic gaseous disks
| Наименование публикации | Polygonal structures in galactic gaseous disks |
| Тип публикации | Статья |
| Библиографическое описание | Khoperskov, S. A. Polygonal structures in galactic gaseous disks / S. A. Khoperskov, M. A. Eremin, A. V. Khoperskov // Astronomical and Astrophysical Transactions. — 2012. — Vol. 27, Issue 2. — Pp. 245–250. |
| Аннотация | This work is devoted to the numerical multidimensional computational modeling of a gaseous disk in an external potential of the spiral stellar density wave. The possibility of polygonal structure formation in spiral galaxies (see [1, 4, 5]) was studied. Our simulations demonstrated that polygonal structures result from spiral shock instabilities. Polygonal structures are essentially non-stationary patterns. The characteristic time of straightened segments formation does not exceed the period of revolution of the periphery of the stellar disk. Polygonal structures form in models with slow rotation of spiral arms, if corotation radius is at the periphery of the disk. We also compared polygonal structures in 2D and 3D models and found a good agreement between them. |
| Ключевые cлова | Galaxy dynamics; Spiral structure; Shocks instability |
| Год публикации | 2012 |
| Автор(ы) |
Хоперсков Сергей Александрович
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| Электронная копия публикации | Загрузить |