3 papers
astro-ph.CO2020
Testing Stochastic Gravitational Wave Signals from Primordial Black Holes with Optical Telescopes
Sunao Sugiyama, Volodymyr Takhistov, Edoardo Vitagliano +3
Primordial black holes (PBHs) can constitute the predominant fraction of dark matter (DM) if PBHs reside in the currently unconstrained "sublunar" mass range. PBHs originating from…
astro-ph.CO2020
Validating a minimal galaxy bias method for cosmological parameter inference using HSC-SDSS mock catalogs
Sunao Sugiyama, Masahiro Takada, Yosuke Kobayashi +4
We assess the performance of a perturbation theory inspired method for inferring cosmological parameters from the joint measurements of galaxy-galaxy weak lensing () and the pr…
astro-ph.CO2019
On the wave optics effect on primordial black hole constraints from optical microlensing search
Sunao Sugiyama, Toshiki Kurita, Masahiro Takada
Microlensing of stars, e.g. in the Galactic bulge and Andromeda galaxy (M31), is among the most robust, powerful method to constrain primordial black holes (PBHs) that are a viable…