| Автор | Nicolaos D. Caranicolas |
| Автор | Euaggelos E. Zotos |
| Дата выпуска | 2011-07-01 |
| dc.description | We study the regular or chaotic character of orbits in a 3D dynamical model, describing a triaxial galaxy surrounded by a spherical dark halo component. Our numerical experiments suggest that the percentage of chaotic orbits decreases exponentially as the mass of the dark halo increases. A linear increase of the percentage of the chaotic orbits was observed as the scale length of the halo component increases. In order to distinguish between regular and chaotic motion, we chose to use the total angular momentum L<sub>tot</sub> of the 3D orbits as a new indicator. Comparison with other, previously used, dynamical indicators, such as the Lyapunov Characteristic Exponent or the P(f) spectral method, shows that the L<sub>tot</sub> indicator gives very fast and reliable results for characterizing the nature of orbits in galactic dynamical models. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2011 National Astronomical Observatories of Chinese Academy of Sciences and IOP Publishing Ltd. |
| Название | Dark halos acting as chaos controllers in asymmetric triaxial galaxy models |
| Тип | paper |
| DOI | 10.1088/1674-4527/11/7/006 |
| Electronic ISSN | 2397-6209 |
| Print ISSN | 1674-4527 |
| Журнал | Research in Astronomy and Astrophysics |
| Том | 11 |
| Первая страница | 811 |
| Последняя страница | 823 |
| Аффилиация | Nicolaos D. Caranicolas; Department of Physics, Section of Astrophysics, Astronomy and Mechanics, Aristotle University of Thessaloniki 541 24, Thessaloniki, Greece |
| Аффилиация | Euaggelos E. Zotos; Department of Physics, Section of Astrophysics, Astronomy and Mechanics, Aristotle University of Thessaloniki 541 24, Thessaloniki, Greece |
| Выпуск | 7 |
