T
Toshiki Kurita
Researcher at Institute for the Physics and Mathematics of the Universe
Publications - 13
Citations - 838
Toshiki Kurita is an academic researcher from Institute for the Physics and Mathematics of the Universe. The author has contributed to research in topics: Spectral density & Gravitational microlensing. The author has an hindex of 7, co-authored 9 publications receiving 634 citations. Previous affiliations of Toshiki Kurita include University of Tokyo.
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Journal ArticleDOI
Microlensing constraints on primordial black holes with Subaru/HSC Andromeda observations
Hiroko Niikura,Hiroko Niikura,Masahiro Takada,Naoki Yasuda,Robert H. Lupton,Takahiro Sumi,Surhud More,Surhud More,Toshiki Kurita,Toshiki Kurita,Sunao Sugiyama,Sunao Sugiyama,Anupreeta More,Anupreeta More,Masamune Oguri,Masamune Oguri,Masashi Chiba +16 more
TL;DR: In this paper, the abundance of primordial black holes in the Galactic halo is constrained through their microlensing of stars in M31, but only a single candidate event is found, providing stringent upper bounds on their abundance.
Journal ArticleDOI
Microlensing constraints on primordial black holes with the Subaru/HSC Andromeda observation
Hiroko Niikura,Masahiro Takada,Naoki Yasuda,Robert H. Lupton,Takahiro Sumi,Surhud More,Toshiki Kurita,Sunao Sugiyama,A. More,Masamune Oguri,Masashi Chiba +10 more
TL;DR: In this paper, the authors carried out a 7 hour-long observation of the Andromeda galaxy (M31) with the Subaru Hyper Suprime-Cam to search for microlensing of stars in M31 by primordial black holes lying in the halo regions of the Milky Way (MW) and M31.
Journal ArticleDOI
On the wave optics effect on primordial black hole constraints from optical microlensing search
TL;DR: In this paper, the authors examined the impact of wave effect on the primordial black hole (PBH) constraints obtained from the $r$-band (6210\AA) monitoring observation of M31 stars.
Journal ArticleDOI
The impact of projection effects on cluster observables: stacked lensing and projected clustering
Tomomi Sunayama,Youngsoo Park,Masahiro Takada,Yosuke Kobayashi,Yosuke Kobayashi,Takahiro Nishimichi,Takahiro Nishimichi,Toshiki Kurita,Toshiki Kurita,Surhud More,Surhud More,Masamune Oguri,Masamune Oguri,Ken Osato +13 more
TL;DR: In this article, the authors quantify the impact of projection effects on cluster cosmology using mock cluster catalogs built from cosmological N-body simulations, and identify the origin of these boosts as the inherent selection bias of optical cluster finders for clusters embedded within filaments aligned with the line of sight.
Journal ArticleDOI
Power spectrum of halo intrinsic alignments in simulations
Toshiki Kurita,Toshiki Kurita,Masahiro Takada,Takahiro Nishimichi,Takahiro Nishimichi,Ryuichi Takahashi,Ken Osato,Yosuke Kobayashi,Yosuke Kobayashi +8 more
TL;DR: In this article, the authors used a suite of $N$-body simulations to study intrinsic alignments of halo shapes with the surrounding large-scale structure in the $\Lambda$CDM model.