624 citations · 9k across the 85 of their papers we have counts for
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gr-qc2026
Limiting cases of second-order moments of relativistic stars and their universality
Koutarou Kyutoku
Extending the work presented in a workshop ``From Quarks to Neutron Stars: Insights from kHz gravitational waves'', we discuss some limiting cases of the moment of inertia, tidal d…
gr-qc2026
Finite signal-to-noise ratio bias in parameter estimation for damped oscillations: cautionary remark about catalog-level black-hole spectroscopy
Koutarou Kyutoku
We investigate biases in parameter estimation for damped oscillations motivated by applications to black-hole spectroscopy in gravitational-wave physics. Focusing on the simplest m…
astro-ph.HE2026
Higher-order statistics of the stochastic gravitational wave background from supermassive black hole binaries
Hinano Hisamatsu, Koutarou Kyutoku
Recent progress in gravitational wave observations has positioned pulsar timing arrays as a key tool for detecting the stochastic gravitational wave background in the nanohertz ban…