5 citations · 7 across the 3 of their papers we have counts for
5 papers
Strong deflection of massive particles via the geodesic deviation equation
Takahisa Igata, Yohsuke Takamori
We develop a formulation of the strong deflection limit for the scattering of particles following timelike geodesics in asymptotically flat, static, and spherically symmetric space…
Strong-deflection expansion of the deflection angle near a degenerate photon sphere
Takahisa Igata, Tadashi Sasaki, Naoki Tsukamoto
We present a strong-deflection expansion for the deflection angle of light rays scattered near a degenerate photon sphere in asymptotically flat, static, and spherically symmetric…
Deflection angle in the strong deflection limit: A perspective from local geometrical invariants and matter distributions
Takahisa Igata
In static, spherically symmetric spacetimes, the deflection angle of photons in the strong deflection limit exhibits a logarithmic divergence. We introduce an analytical framework…
Deflection angle in the strong deflection limit for static and axisymmetric spacetimes: Local curvature, matter fields, and quasinormal modes
Takahisa Igata
We investigate the deflection of photons in the strong deflection limit within static and axisymmetric spacetimes possessing reflection symmetry. As the impact parameter approaches…
Deflection Angle in the Strong Deflection Limit and Quasinormal Modes in Stationary Axisymmetric Spacetimes
Takahisa Igata
We derive a coordinate-invariant expression for the photon deflection angle in the strong deflection limit (SDL) of stationary axisymmetric spacetimes. The key logarithmic-divergen…