| 词条 | Box orbit | |||
| 释义 |
In stellar dynamics, a box orbit refers to a particular type of orbit that can be seen in triaxial systems, i.e. systems that do not possess a symmetry around any of its axes. They contrast with the loop orbits that are observed in spherically symmetric or axisymmetric systems. In a box orbit, a star oscillates independently along the three different axes as it moves through the system. As a result of this motion, it fills in a (roughly) box-shaped region of space. Unlike loop orbits, the stars on box orbits can come arbitrarily close to the center of the system. As a special case, if the frequencies of oscillation in different directions are commensurate, the orbit will lie on a one- or two-dimensional manifold and can avoid the center.[1] Such orbits are sometimes called "boxlets".
References1. ^{{Citation | last = Merritt | first = D. | author-link = David Merritt | last2 = Valluri | first2 = M. | title = Resonant Orbits in Triaxial Galaxies | journal = The Astronomical Journal | volume = 118 | pages = 1177–1189 | date = September 1999 |arxiv = astro-ph/9903452 |bibcode = 1999AJ....118.1177M |doi = 10.1086/301012 }} See also
1 : Orbits |
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