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Graviton Mass from Close White Dwarf Binaries Detectable with LISA
Asantha Cooray, Naoki Seto
The arrival times of gravitational waves and optical light from orbiting binaries provide a mechanism to understand the propagation speed of gravity when compared to that of light…
Optical Identification of Close White Dwarf Binaries in the LISA Era
Asantha Cooray, Alison J. Farmer, Naoki Seto
The Laser Interferometer Space Antenna (LISA) is expected to detect close white dwarf binaries (CWDBs) through their gravitational radiation. Around 3000 binaries will be spectrall…
Probing the equation of state of the early universe with a space laser interferometer
Naoki Seto, Jun'Ichi Yokoyama
We propose a method to probe the equation of state of the early universe and its evolution, using the stochastic gravitational wave background from inflation. A small deviation fro…
Strong Gravitational Lensing and Localization of Merging Massive Black Hole Binaries with LISA
Naoki Seto
We study how the angular resolution of LISA for merging massive black-hole binaries would be improved if we observe multiple gravitational wave ``images'' due to strong gravitation…