182 citations · 220 across the 2 of their papers we have counts for
4 papers
Gravitational lens without asymptotic flatness: Its application to the Weyl gravity
Keita Takizawa, Toshiaki Ono, Hideki Asada
We discuss, without assuming asymptotic flatness, a gravitational lens for an observer and source that are within a finite distance from a lens object. The proposed lens equation i…
Gravitational deflection angle of light: Definition by an observer and its application to an asymptotically nonflat spacetime
Keita Takizawa, Toshiaki Ono, Hideki Asada
The gravitational deflection angle of light for an observer and source at finite distance from a lens object has been studied by Ishihara et al. [Phys. Rev. D, 94, 084015 (2016)],…
The effects of finite distance on the gravitational deflection angle of light
Toshiaki Ono, Hideki Asada
In order to clarify effects of the finite distance from a lens object to a light source and a receiver, the gravitational deflection of light has been recently reexamined by using…
Finite-distance corrections to the gravitational bending angle of light in the strong deflection limit
Asahi Ishihara, Yusuke Suzuki, Toshiaki Ono +1
Continuing work initiated in an earlier publication [Ishihara, Suzuki, Ono, Kitamura, Asada, Phys. Rev. D {\bf 94}, 084015 (2016) ], we discuss a method of calculating the bending…