66 citations · 529 across the 24 of their papers we have counts for
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astro-ph.CO2011★ 40 cited
An analytical approximation of the luminosity distance in flat cosmologies with a cosmological constant
Masaru Adachi, Masumi Kasai
We present an analytical approximation formula for the luminosity distance in spatially flat cosmologies with dust and a cosmological constant. Apart from the overall factor, the e…
gr-qc2011★ 61 cited
Effect of the cosmological constant on the bending of light and the cosmological lens equation
Hideyoshi Arakida, Masumi Kasai
We revisit the effect of cosmological constant on the light deflection and its role in the cosmological lens equation. First, we re-examine the motion of photon in the Schwarzs…
astro-ph.CO2011
Perturbative Approach to the Gravitational Lensing by a Non-spherically Distorted Compact Object
Amano Saijo, Masumi Kasai
We investigate the gravitational lens effect caused by a non-spherically distorted compact object. The non-spherical property of the gravitational potential is modeled by a quadrup…