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arXiv · 1204.2877

Gravitational-wave standard siren without redshift identification

Atsushi Nishizawa·Kent Yagi·Atsushi Taruya·Takahiro Tanaka
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Abstract

Proposed space-based gravitational-wave (GW) detectors such as DECIGO and BBO will detect $\sim10^6$ neutron-star (NS) binaries and determine the luminosity distances to the binaries with high precision. Combining the luminosity distances with cosmologically-induced phase corrections on the GWs, cosmological expansion out to high redshift can be measured without the redshift determinations of host galaxies by electromagnetic observation and can be a unique probe for dark energy. This article is based on the results obtained in [1] where we investigated constraining power of the GW standard siren without redshift information on the equation of state of dark energy with future space-based GW detectors. We also compare the results with those obtained with other instruments and methods.

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Atsushi Nishizawa, Kent Yagi, Atsushi Taruya, Takahiro Tanaka. 2012-04-13. Gravitational-wave standard siren without redshift identification. https://doi.org/10.1088/1742-6596/363/1/012052

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