http://arxiv.org/abs/1906.07726
We study the general relativitic (GR) effects induced by a supermassive black hole on the orbital and spin evolution of a merging black hole binary (BHB) in a hierarchical triple system. A sufficiently inclined outer orbit can excite Lidov-Kozai eccentricity oscillations in the BHB and induce its merger. These GR effects generate extra precessions on the BHB orbits and spins, significantly increasing the inclination window for mergers and producing a wide range of spin orientations when the BHB enters LIGO band. This “GR-enhanced” channel may play an important role in BHB mergers.
B. Liu, D. Lai and Y. Wang
Thu, 20 Jun 19
31/51
Comments: 7 pages, 5 figures, 3 appendixes. To be submitted
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