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- W2885016875 abstract "Hypervelocity binaries (HVBs) can be produced by a close encounter between stellar binaries and supermassive black hole (SMBH)-intermediate massive black hole (IMBH) binaries. We perform scattering experiments between tight stellar binaries and an SMBH-IMBH binary (within the observationally allowed parameters), using high-precision N-body integrations. Simulation results show that only a few HVBs can be produced in the Galactic center if it harbors a $4times10^3M_odot$ IMBH. However, we find that tight HVBs can be efficiently produced in prograde coplanar orbits with respect to the SMBH-IMBH binary. Therefore, the trajectories of the HVBs provide a promising way to constrain the IMBH orbital plane, if one exists. More importantly, we find that the ejected tight binaries are eccentric. For other galaxies hosting equal-mass SMBH binaries for which the HVB ejection rate is much higher relative to SMBH-IMBH binaries, these ejected compact binaries constitute promising extragalactic merger sources that could be detected by gravitational wave detectors." @default.
- W2885016875 created "2018-08-03" @default.
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- W2885016875 date "2018-10-24" @default.
- W2885016875 modified "2023-09-22" @default.
- W2885016875 title "Hypervelocity binaries from close encounters with a SMBH–IMBH binary: orbital properties and diagnostics" @default.
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- W2885016875 doi "https://doi.org/10.1093/mnras/sty2866" @default.
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