Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ap.....53..357k&link_type=abstract
Astrophysics, Volume 53, Issue 3, pp.357-366
Astronomy and Astrophysics
Astrophysics
Galactic Nuclei, Central Compact Objects, Binaries, Dynamics
Scientific paper
The migration of binary systems of compact massive objects in galactic nuclei owing to encounters with globular clusters is studied. A binary moves in the field of a galactic bulge with a fixed potential. An empirical relationship between the masses of the binary and bulge of the form M b = 1000( M 1+ M 2) is used, where M 1 and M 2 are the masses of the components of the binary. The amplitude of the drift of the binary components is found as a function of the initial binary orbit parameters, the size of the bulge, and the initial velocity and mass of the globular cluster. It is shown that the amplitude of the drift depends to a greater extent on the parameters of the cluster, while the magnitude of the perturbation in the binary orbit depends weakly on the bulge size and the eccentricity and major semiaxis of the binary orbit. The amplitude of the drift of the center of mass also decreases on the average as the difference between the masses of the components becomes larger.
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