154 citations · 256 across the 19 of their papers we have counts for
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Continuous Limit of Multiple Lens Effect and the Optical Scalar Equation
Hiroshi Yoshida, Kouji Nakamura, Minoru Omote
We study the continuous limit of the multiple gravitational lensing theory based on the thin lens approximation. Under the approximation, we define a new, light-path dependent angu…
Stochastic Gravitational Wave Background in Brane World Cosmology
Kiyotomo Ichiki, Kouji Nakamura
We investigate the cosmological evolution of gravitational waves in Friedman-Robertson-Walker brane world models embedded in a five dimensional anti de-Sitter spacetime. To predict…
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…