2016/03/31 by Masamune Oguri · 120 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Computer science #Cosmology and Gravitation Theories #Galaxy #Physics #Pulsars and Gravitational Waves Research #Red shift #Redshift #Relation (database) #astro-ph.CO
paper · pdf · doi:10.1103/physrevd.93.083511
published in Physical review. D/Physical review. D. 93(8) (American Physical Society) · 7 pages, 2 figures, accepted for publication in Phys. Rev. D
arxiv created 2016/04/02 · openalex publication_date 2016/04/13 · arxiv updated 2016/04/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Gravitational waves from inspiraling compact binaries are known to be an excellent absolute distance indicator, yet it is unclear whether electromagnetic counterparts of these events are securely identified for measuring their redshifts, especially in the case of black hole--black hole mergers such as the one recently observed with the Advanced LIGO. We propose to use the cross-correlation between spatial distributions of gravitational wave sources and galaxies with known redshifts as an alternative means of constraining the distance-redshift relation from gravitational waves. In our analysis, we explicitly include the modulation of the distribution of gravitational wave sources due to weak gravitational lensing. We show that the cross-correlation analysis in next-generation observations will be able to tightly constrain the relation between the absolute distance and the redshift and therefore constrain the Hubble constant as well as dark energy parameters.