High-velocity stars as a result of encounters between stars and massive binary black holes in galactic nuclei
- Авторы: Zhuiko S.V.1, Orlov V.V.2,3, Shirokova K.S.2,3
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Учреждения:
- Sternberg Astronomical Institute
- St. Petersburg State University
- Central (Pulkovo) Astronomical Observatory
- Выпуск: Том 61, № 1 (2017)
- Страницы: 47-52
- Раздел: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/190258
- DOI: https://doi.org/10.1134/S1063772916120076
- ID: 190258
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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 two-body problem with 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 nearer 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.
Об авторах
S. Zhuiko
Sternberg Astronomical Institute
Автор, ответственный за переписку.
Email: navigator@sai.msu.ru
Россия, Universitetskii pr. 13, Moscow, 119992
V. Orlov
St. Petersburg State University; Central (Pulkovo) Astronomical Observatory
Email: navigator@sai.msu.ru
Россия, Universitetskii pr. 28, Petrodvorets, 198504; Pulkovskoe shosse 65, St. Petersburg, 196140
K. Shirokova
St. Petersburg State University; Central (Pulkovo) Astronomical Observatory
Email: navigator@sai.msu.ru
Россия, Universitetskii pr. 28, Petrodvorets, 198504; Pulkovskoe shosse 65, St. Petersburg, 196140
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