Search Results for author: Masato Shirasaki

Found 5 papers, 2 papers with code

Deep Learning for Line Intensity Mapping Observations: Information Extraction from Noisy Maps

no code implementations2 Oct 2020 Kana Moriwaki, Masato Shirasaki, Naoki Yoshida

The trained cGANs successfully reconstruct H{\alpha} emission from galaxies at a target redshift from observed, noisy intensity maps.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

A semi-analytic model of pairwise velocity distribution between dark matter halos

1 code implementation7 Aug 2020 Masato Shirasaki, Eric M. Huff, Katarina Markovic, Jason D. Rhodes

At the length scales of $r=5-40\, [h^{-1}\, \mathrm{Mpc}]$, our model predicts the mean and dispersion of the pairwise velocity for dark matter halos with their masses of $10^{12. 5-13. 5} \, [h^{-1}M_{\odot}]$ at $0. 3 < z < 1$ with a 5%-level precision, while the model precision reaches a 20% level (mostly a 10% level) for other masses and redshifts explored in the simulations.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

Noise reduction for weak lensing mass mapping: An application of generative adversarial networks to Subaru Hyper Suprime-Cam first-year data

no code implementations28 Nov 2019 Masato Shirasaki, Kana Moriwaki, Taira Oogi, Naoki Yoshida, Shiro Ikeda, Takahiro Nishimichi

We study the non-Gaussian information in denoised maps using one-point probability distribution functions (PDFs) and also perform matching analysis for positive peaks and massive clusters.

Denoising Ensemble Learning +1

Denoising Weak Lensing Mass Maps with Deep Learning

no code implementations14 Dec 2018 Masato Shirasaki, Naoki Yoshida, Shiro Ikeda

Weak gravitational lensing is a powerful probe of the large-scale cosmic matter distribution.

Clustering Denoising +1

Full-sky Gravitational Lensing Simulation for Large-area Galaxy Surveys and Cosmic Microwave Background Experiments

2 code implementations5 Jun 2017 Ryuichi Takahashi, Takashi Hamana, Masato Shirasaki, Toshiya Namikawa, Takahiro Nishimichi, Ken Osato, Kosei Shiroyama

The data sets include full-sky convergence and shear maps from redshifts $z=0. 05$ to $5. 3$ at intervals of $150 \, h^{-1}{\rm Mpc}$ comoving radial distance (corresponding to a redshift interval of $\Delta z \simeq 0. 05$ at the nearby universe), enabling the construction of a mock shear catalog for an arbitrary source distribution up to $z=5. 3$.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

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