171 citations · 989 across the 31 of their papers we have counts for
14 papers · 1 filter
Cosmic Infrared Background Tomography and a Census of Cosmic Dust and Star Formation
Yi-Kuan Chiang, Ryu Makiya, Brice Ménard
The cosmic far-infrared background (CIB) encodes dust emission from all galaxies and carries valuable information on structure formation, star formation, and chemical enrichment ac…
Mitigating the impact of fiber assignment on the measurement of galaxy-lensing cross correlation
Ryu Makiya, Tomomi Sunayama
We examine the impact of fiber assignment on the measurement of galaxy clustering and its cross correlation with weak lensing fields. Unlike the past spectroscopic galaxy surveys s…
Ray-tracing log-normal simulation for weak gravitational lensing: application to the cross-correlation with galaxies
Ryu Makiya, Issha Kayo, Eiichiro Komatsu
We present an algorithm to self-consistently generate mock weak gravitational lensing convergence fields and galaxy distributions in redshift space. We generate three-dimensional c…
The thermal and gravitational energy densities in the large-scale structure of the Universe
Yi-Kuan Chiang, Ryu Makiya, Eiichiro Komatsu +1
As cosmic structures form, matter density fluctuations collapse gravitationally and baryonic matter is shock-heated and thermalized. We therefore expect a connection between the me…
The Cosmic Thermal History Probed by Sunyaev-Zeldovich Effect Tomography
Yi-Kuan Chiang, Ryu Makiya, Brice Ménard +1
The cosmic thermal history, quantified by the evolution of the mean thermal energy density in the universe, is driven by the growth of structures as baryons get shock heated in col…
Mitigating the impact of fiber assignment on clustering measurements from deep galaxy redshift surveys
Tomomi Sunayama, Masahiro Takada, Martin Reinecke +6
We examine the impact of fiber assignment on clustering measurements from fiber-fed spectroscopic galaxy surveys. We identify new effects which were absent in previous, relatively…
New constraints on the mass bias of galaxy clusters from the power spectra of the thermal Sunyaev-Zeldovich effect and cosmic shear
Ryu Makiya, Chiaki Hikage, Eiichiro Komatsu
Thermal Sunyaev-Zeldovich (tSZ) power spectrum is a powerful probe of the present-day amplitude of matter density fluctuations, and has been measured up to from…
Joint analysis of the thermal Sunyaev-Zeldovich effect and 2MASS galaxies: Probing gas physics in the local Universe and beyond
Ryu Makiya, Shin'ichiro Ando, Eiichiro Komatsu
We present a first joint analysis of the power spectra of the thermal Sunyaev-Zeldovich (tSZ) effect measured by the Planck and the number density fluctuations of galaxies in the 2…
Generating Log-normal Mock Catalog of Galaxies in Redshift Space
Aniket Agrawal, Ryu Makiya, Chi-Ting Chiang +3
We present a public code to generate a mock galaxy catalog in redshift space assuming a log-normal probability density function (PDF) of galaxy and matter density fields. We draw g…
Testing anthropic reasoning for the cosmological constant with a realistic galaxy formation model
Takahiro Sudoh, Tomonori Totani, Ryu Makiya +1
The anthropic principle is one of the possible explanations for the cosmological constant () problem. In previous studies, a dark halo mass threshold comparable with our Galaxy…
The GC Simulations : Quantifying the Dark Side of the Universe in the Planck Cosmology
Tomoaki Ishiyama, Motohiro Enoki, Masakazu A. R. Kobayashi +3
We present the evolution of dark matter halos in six large cosmological N-body simulations, called the GC (New Numerical Galaxy Catalog) simulations on the basis of the LCDM c…
Galaxy luminosity function and its cosmological evolution: Testing a new feedback model depending on galaxy-scale dust opacity
Ryu Makiya, Tomonori Totani, Masakazu A. R. Kobayashi +2
We present a new version of a semi-analytic model of cosmological galaxy formation, incorporating a star formation law with a feedback depending on the galaxy-scale mean dust opaci…
Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars
Yoshiyuki Inoue, Susumu Inoue, Masakazu A. R. Kobayashi +3
We present a new model of the extragalactic background light (EBL) and corresponding gamma-gamma opacity for intergalactic gamma-ray absorption from z = 0 up to z = 10, based on a…
Suzaku Observation of Abell 1555 and Abell 1558: Searching for Non-thermal Emission from Large Scale Structure Formation
Ryu Makiya, Tomonori Totani, Kazuhiro Nakazawa
We report X-ray observations of two galaxy clusters Abell 1555 and Abell 1558 with Suzaku, which are included in a large scale filamentary structure and a supercluster, to search f…