期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 896, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/ab9743
关键词
Gravitational waves; Black holes; Compact binary stars; LIGO; Gravitational wave sources
资金
- Simons Foundation
- Josephine de Karman Fellowship Trust
- NSF Graduate Research Fellowship Program [DGE-1746045]
- NSF [PHY-1708081]
- Kavli Institute for Cosmological Physics at the University of Chicago through the Kavli Foundation
- Marion and Stuart Rice Award
- U.S. National Science Foundation
- French Centre National de Recherche Scientifique (CNRS)
- Italian Istituto Nazionale della Fisica Nucleare (INFN)
- Dutch Nikhef
- Polish institute
- Hungarian institute
One of the goals of gravitational-wave astronomy is to quantify the evolution of the compact binary merger rate with redshift. The redshift distribution of black hole mergers would offer considerable information about their evolutionary history, including their progenitor formation rate, the dependence of black hole formation on stellar metallicity, and the time delay distribution between formation and merger. Efforts to measure the binary redshift distribution are currently limited, however, by the detection range of existing instruments, which can individually resolve compact binary merger events only out toindirectsearches for the stochastic gravitational-wave background due to unresolved distant sources, we can glean information about the peak redshift,z(p), at which the binary black hole merger rate attains its maximum, even when this redshift is beyond the detection horizon. Using data from Advanced LIGO and Virgo's first and second observing runs, we employ this strategy to place joint constraints onz(p)and the slope alpha with which the binary merger rate increases at low redshifts, ruling out merger rates that grow faster than alpha greater than or similar to 7 and peak beyond z(p) greater than or similar to 1.5. Looking ahead, we project that approximately one year of observation with design-sensitivity Advanced LIGO will further break remaining degeneracies, enabling a direct measurement of the peak redshift of the binary black hole merger history.
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