Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Shogo Masaki"'
The long-wavelength coherent overdensity and tidal force, which are not direct observables for a finite-volume survey, affect time evolution of cosmic structure formation and therefore clustering observables through the mode coupling. In this paper w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8943c9be82ac315038b6ecc2ea803f2
http://arxiv.org/abs/2003.10052
http://arxiv.org/abs/2003.10052
To generate initial conditions for cosmological $N$-body simulations, one needs to prepare a uniform distribution of simulation particles, so-called the pre-initial condition (pre-IC). The standard method to construct the pre-IC is to place the parti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::425a0fc6e437b18215a346782a945a0e
Publikováno v:
Physical Review D. 99
We constrain the abundance of primordial black holes (PBH) using 2622 microlensing events obtained from 5-years observations of stars in the Galactic bulge by the Optical Gravitational Lensing Experiment (OGLE). The majority of microlensing events di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::484cad529ccb64e9498ea993489f2675
https://doi.org/10.1103/physrevd.99.083503
https://doi.org/10.1103/physrevd.99.083503
The peculiar velocity field measured by redshift-space distortions (RSD) in galaxy surveys provides a unique probe of the growth of large-scale structure. However, systematic effects arise when including satellite galaxies in the clustering analysis.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d8b5b30f52e7ac7547770636c14be2b
http://arxiv.org/abs/1611.04165
http://arxiv.org/abs/1611.04165
Autor:
Naoki Yoshida, Shogo Masaki
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 423:L117-L121
We develop an analytic halo model for the distribution of dust around galaxies. The model results are compared with the observed surface dust density profile measured through reddening of background quasars in the Sloan Digital Sky Survey (SDSS) repo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c37a0ceed1459cb30956f5512c9ca52
https://doi.org/10.1111/j.1745-3933.2012.01268.x
https://doi.org/10.1111/j.1745-3933.2012.01268.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 410:548-558
We present a clustering analysis of ~60000 massive (stellar mass M * > 10 11 M ⊙ ) galaxies out to z = 1 drawn from 55.2 deg 2 of the UKIRT Infrared Deep Sky Survey (UKIDSS) and the Sloan Digital Sky Survey (SDSS) II Supernova Survey. Strong cluste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c03a1d8685e70464b85b5bacf1f62af6
https://doi.org/10.1111/j.1365-2966.2010.17464.x
https://doi.org/10.1111/j.1365-2966.2010.17464.x
We extend the subhalo abundance matching method to assign galaxy color to subhalos. We separate a luminosity-binned subhalo sample into two groups by a secondary subhalo property which is presumed to be correlated with galaxy color. The two subsample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aa3b5c87c9769c47c0d0fe8ee227181
We develop a novel abundance matching method to construct a mock catalog of luminous red galaxies (LRGs) in SDSS, using catalogs of halos and subhalos in N-body simulations for a LCDM model. Motivated by observations suggesting that LRGs are passivel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1430f6b5cd07c0609f7e316693ca57f8
http://arxiv.org/abs/1211.7077
http://arxiv.org/abs/1211.7077
Autor:
Shogo Masaki
Publikováno v:
Proceedings of Identification of Dark Matter 2010 — PoS(IDM2010).
We study the matter distribution in and around dark halos in the standard Λ cold dark matter (ΛCDM) universe. We use the outputs of high resolution N-body simulations to compute the mean surface density profile around galactic size dark matter halo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89ba7782143cd1be8bd27ed774329740
https://doi.org/10.22323/1.110.0080
https://doi.org/10.22323/1.110.0080
Publikováno v:
Physical Review D. 82
A systematic study of gravitational waves from galaxy mergers, through $N$-body simulations, was performed. In particular, we investigated the relative importance of galaxy components (disk, bulge and halo) and effects of initial relative velocity, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e25dc283a965d43b991530d6c9b88286
https://doi.org/10.1103/physrevd.82.124007
https://doi.org/10.1103/physrevd.82.124007