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- W3105192114 abstract "We study the evolution of disk accretion during the merger of supermassive black hole binaries in galactic nuclei. In hierarchical galaxy formation models, the most common binaries are likely to arise from minor galactic mergers, and have unequal mass black holes. Once such a binary becomes embedded in an accretion disk at a separation of the order of 0.1 pc, the merger proceeds in two distinct phases. During the first phase, the loss of orbital angular momentum to the gaseous disk shrinks the binary on a timescale of ~10 Myr. The accretion rate onto the primary black hole is not increased, and can be substantially reduced, during this disk-driven migration. At smaller separations, gravitational radiation becomes the dominant angular momentum loss process, and any gas trapped inside the orbit of the secondary is driven inwards by the inspiralling black hole. The implied accretion rate just prior to coalescence exceeds the Eddington limit, so the final merger is likely to occur within a common envelope formed from the disrupted inner disk, and be accompanied by high velocity (~10,000 km/s) outflows." @default.
- W3105192114 created "2020-11-23" @default.
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- W3105192114 date "2002-02-12" @default.
- W3105192114 modified "2023-10-13" @default.
- W3105192114 title "Accretion during the Merger of Supermassive Black Holes" @default.
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- W3105192114 doi "https://doi.org/10.1086/339770" @default.
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