High-velocity stars as a result of encounters between stars and massive binary black holes in galactic nucleiстатья
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Дата последнего поиска статьи во внешних источниках: 25 апреля 2017 г.
Аннотация:Numerical simulations of the motions of stars in the gravitational fields of binary black holes with various component mass ratios have been carried out. Two models are considered: (1) the problem of two fixed centers; (2) the general three-body problem. The first model is applicable only over short times Δt << T, where T is the period of the binary system. The second model is applicable at all times except for during close encounters of stars with one of the binary components, r ≤ 0.00002 pc, where r is the distance from the star to the nearest black hole. In very close passages, relativistic corrections must be taken into account. Estimates of the probability of formation of high-velocity stars as a result of such interactions are obtained. It is shown that this mechanism is not suitable for the nucleus of our Galaxy due to the probable absence of a second massive black hole in the central region of the Galaxy.