期刊
ASTROPHYSICAL JOURNAL
卷 835, 期 2, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-4357/835/2/165
关键词
gravitational waves; stars: black holes
资金
- Columbia University in New York
- National Science Foundation [PHY-1447182]
- NASA ATP grants [NNX11AE05G, NNX15AB19G]
- Simons Fellowship in Theoretical Physics
- European Research Council under the European Union's Horizon Programme, ERC-STG grant [GalNUC 638435]
- NSF [PHY-1066293]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1404462] Funding Source: National Science Foundation
- NASA [146696, NNX15AB19G, 808495, NNX11AE05G] Funding Source: Federal RePORTER
The Laser Interferometer Gravitational-wave Observatory (LIGO) found direct evidence for double black hole binaries emitting gravitational waves. Galactic nuclei are expected to harbor the densest population of stellar-mass black holes. A significant fraction (similar to 30%) of these black holes can reside in binaries. We examine the fate of the black hole binaries in active galactic nuclei, which get trapped in the inner region of the accretion disk around the central supermassive black hole. We show that binary black holes can migrate into and then rapidly merge within the disk well within a Salpeter time. The binaries may also accrete a significant amount of gas from the disk, well above the Eddington rate. This could lead to detectable X-ray or gamma-ray emission, but would require hyperEddington accretion with a few percent radiative efficiency, comparable to thin disks. We discuss implications for gravitational-wave observations and black hole population studies. We estimate that Advanced LIGO may detect similar to 20 such gas-induced binary mergers per year.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据