7 papers · 1 filter
Proto-clusters in the Lambda CDM Universe
Tamon Suwa, Asao Habe, Kohji Yoshikawa
We compare the highly clustered populations of very high redshift galaxies with proto-clusters identified numerically in a standard CDM universe () simulation.…
Future Japanese missions for the study of warm-hot intergalactic medium
T. Ohashi, M. Ishida, S. Sasaki +10
We present our proposal for a small X-ray mission DIOS (Diffuse Intergalactic Oxygen Surveyor) to perform survey observations of warm-hot intergalactic medium using OVII and OVIII…
Searching for cosmic missing baryons with DIOS -- Diffuse Intergalactic Oxygen Surveyor --
Yasushi Suto, Kohji Yoshikawa, Noriko Y. Yamasaki +9
Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take a form of warm/hot intergalactic medium (WHIM) whose X-ray continuum emission is ver…
Angular momentum distribution of hot gas and implications for disk galaxy formation
D. N. Chen, Y. P. Jing, Kohji Yoshikawa
We study the angular momentum profiles both for dark matter and for gas within virialized halos, using a statistical sample of halos drawn from cosmological hydrodynamics simulatio…
The Luminosity Function of IRAS PSCz Galaxies
Tsutomu T. Takeuchi, Kohji Yoshikawa, Takako T. Ishii
We estimated the luminosity function (LF) of IRAS galaxies in the PSCz catalogue. The faint end of the PSCz LF is slightly steeper than that of the LF derived by Saunders et al. (1…
Spatial and Dynamical Biases in Velocity Statistics of Galaxies
Kohji Yoshikawa, Y. P. Jing, Gerhard Börner
We present velocity statistics of galaxies and their biases inferred from the statistics of the underlying dark matter using a cosmological hydrodynamic simulation of galaxy format…