Gravitational-wave cosmography with LISA and the Hubble tension

被引:39
|
作者
Kyutoku, Koutarou [1 ,2 ,3 ]
Seto, Naoki [4 ]
机构
[1] KEK, Inst Particle & Nucl Studies, Theory Ctr, Tsukuba, Ibaraki 3050801, Japan
[2] Grad Univ Adv Studies Sokendai, Dept Particle & Nucl Phys, Tsukuba, Ibaraki 3050801, Japan
[3] RIKEN, Interdisciplinary Theoret Sci iTHES Res Grp, Wako, Saitama 3510198, Japan
[4] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevD.95.083525
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We propose that stellar-mass binary black holes like GW150914 will become a tool to explore the local Universe within similar to 100 Mpc in the era of the Laser Interferometer Space Antenna (LISA). High calibration accuracy and annual motion of LISA could enable us to localize up to approximate to 60 binaries more accurately than the error volume of similar to 100 Mpc(3) without electromagnetic counterparts under moderately optimistic assumptions. This accuracy will give us a fair chance to determine the host object solely by gravitational waves. By combining the luminosity distance extracted from gravitational waves with the cosmological redshift determined from the host, the local value of the Hubble parameter will be determined up to a few % without relying on the empirically constructed distance ladder. Gravitational-wave cosmography would pave the way for resolution of the disputed Hubble tension, where the local and global measurements disagree in the value of the Hubble parameter at 3.4 sigma level, which amounts to approximate to 9%.
引用
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页数:6
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