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8 papers · 1 filter
Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
M. Ouchi, K. Shimasaku, S. Okamura +13
(abridged) We investigate photometric properties of Lyman Break Galaxies (LBGs) at z=3.5-5.2 based on large samples of 2,600 LBGs detected in deep (i'~27) and wide-field (1,200 arc…
The relation between the two-point and the three-point correlation functions in the non-linear gravitational clustering regime
Hiroko Koyama, Taihei Yano
The connection between the two-point and the three-point correlation functions in the non-linear gravitational clustering regime is studied. Under a scaling hypothesis, we find tha…
Universality in the distribution of caustics in the expanding Universe
Taihei Yano, Hiroko Koyama, Thomas Buchert +1
We numerically investigate the long--time evolution of density perturbations after the first appearance of caustics in an expanding cosmological model with one--dimensional `single…
Searching for a Long Cosmic String Through the Gravitational Lensing Effect
Yuji Shirasaki, Ei-ichi Matsuzaki, Yoshihiko Mizumoto +7
It has been suggested that cosmic strings produced at a phase transition in the early universe can be the origin of the extremely high energy cosmic rays (EHCR) observed by AGASA a…
The Librating Companions in HD 37124, HD 12661, HD 82943, 47 Uma and GJ 876: Alignment or Antialignment?
Jianghui Ji, Lin Liu, H. Kinoshita +3
We investigated the apsidal motion for the multi-planet systems. In the simulations, we found that the two planets of HD 37124, HD 12661, 47 Uma and HD 82943 separately undergo aps…
Continuous Limit of Multiple Gravitational Lens Effect and Average Magnification Factor
Hiroshi Yoshida, Kouji Nakamura, Minoru Omote
We show that the gravitational magnification factor averaged over all configurations of lenses in a locally inhomogeneous universe satisfy a second order differential equation with…