Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Makiya, Ryu"'
Autor:
Makiya, Ryu, Hirashita, Hiroyuki
We investigate the cosmological evolution of interstellar dust with a semi-analytical galaxy formation model ($\nu^2$GC), focusing on the evolution of grain size distribution. The model predicts the statistical properties of dust mass and grain size
Externí odkaz:
http://arxiv.org/abs/2210.06176
Autor:
Oogi, Taira, Ishiyama, Tomoaki, Prada, Francisco, Sinha, Manodeep, Croton, Darren, Cora, Sofía A., Jullo, Eric, Klypin, Anatoly A., Nagashima, Masahiro, Cacheiro, J. López, Ruedas, José, Kobayashi, Masakazu A. R., Makiya, Ryu
Measurements of the luminosity function of active galactic nuclei (AGN) at high redshift ($z\gtrsim 6$) are expected to suffer from field-to-field variance, including cosmic and Poisson variances. Future surveys, such as those from the Euclid telesco
Externí odkaz:
http://arxiv.org/abs/2207.14689
Autor:
Makiya, Ryu, Sunayama, Tomomi
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 such as Baryon Oscillation Spectroscopic Survey (BOSS), currently ongoi
Externí odkaz:
http://arxiv.org/abs/2110.04883
We present an algorithm to self-consistently generate mock weak gravitational lensing convergence fields and galaxy distributions in redshift space. We generate three-dimensional cosmic density fields that follow a log-normal distribution, and ray-tr
Externí odkaz:
http://arxiv.org/abs/2008.13195
As cosmic structures form, matter density fluctuations collapse gravitationally and baryonic matter is shock-heated and thermalized. We therefore expect a connection between the mean gravitational potential energy density of collapsed halos, $\Omega_
Externí odkaz:
http://arxiv.org/abs/2007.01679
The cosmic thermal history, quantified by the evolution of the mean thermal energy density in the universe, is driven by the growth of structures as baryons get shock heated in collapsing dark matter halos. This process can be probed by redshift-depe
Externí odkaz:
http://arxiv.org/abs/2006.14650
Autor:
Ogura, Kazuyuki, Nagashima, Masahiro, Shimakawa, Rhythm, Hayashi, Masao, Kobayashi, Masakazu A. R., Oogi, Taira, Ishiyama, Tomoaki, Koyama, Yusei, Makiya, Ryu, Okoshi, Katsuya, Onodera, Masato, Shirakata, Hikari
We construct a model of H$\alpha$ emitters (HAEs) based on a semi-analytic galaxy formation model, the New Numerical Galaxy Catalog ($\nu^2$GC). In this paper, we report our estimate for the field variance of the HAE distribution. By calculating the
Externí odkaz:
http://arxiv.org/abs/2004.00815
Autor:
Sunayama, Tomomi, Takada, Masahiro, Reinecke, Martin, Makiya, Ryu, Nishimichi, Takahiro, Komatsu, Eiichiro, Saito, Shun, Tamura, Naoyuki, Yabe, Kiyoto
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 shallow galaxy surveys such as Baryon Oscillation Spectroscopic Survey
Externí odkaz:
http://arxiv.org/abs/1912.06583
Autor:
Hashimoto, Tetsuya, Goto, Tomotsugu, Momose, Rieko, Ho, Chien-Chang, Makiya, Ryu, Chiang, Chia-Ying, Kim, Seong Jin
Galaxies evolve from a blue star-forming phase into a red quiescent one by quenching their star formation activity. In high density environments, this galaxy evolution proceeds earlier and more efficiently. Therefore, local galaxy clusters are domina
Externí odkaz:
http://arxiv.org/abs/1908.01666
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 $\ell\approx 10^3$ from the {\it Planck} data. The largest systematic uncertainty in the inter
Externí odkaz:
http://arxiv.org/abs/1907.07870