18 citations · 29 across the 5 of their papers we have counts for
7 papers
Attractive gravity probe surfaces in higher dimensions
Keisuke Izumi, Yoshimune Tomikawa, Tetsuya Shiromizu +1
A generalization of the Riemannian Penrose inequality in -dimensional space () is done. We introduce a parameter () indicating the streng…
Divergence equations and uniqueness theorem of static spacetimes with conformal scalar hair
Takeshi Shinohara, Yoshimune Tomikawa, Keisuke Izumi +1
We reexamine the Israel-type proof of the uniqueness theorem of the static spacetime outside the photon surface in the Einstein-conformal scalar system. We derive in a systematic f…
Asymptotic behavior of null geodesics near future null infinity: Significance of gravitational waves
Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa +2
We investigate the behavior of null geodesics near future null infinity in asymptotically flat spacetimes. In particular, we focus on the asymptotic behavior of null geodesics that…
Loosely trapped surface and dynamically transversely trapping surface in Einstein-Maxwell system
Kangjae Lee, Tetsuya Shiromizu, Hirotaka Yoshino +2
We study the properties of the loosely trapped surface (LTS) and the dynamically transversely trapping surface (DTTS) in Einstein-Maxwell systems. These concepts of surfaces were p…
Formation of dynamically transversely trapping surfaces and the stretched hoop conjecture
Hirotaka Yoshino, Keisuke Izumi, Tetsuya Shiromizu +1
A dynamically transversely trapping surface (DTTS) is a new concept of an extension of a photon sphere that appropriately represents a strong gravity region and has close analogy w…
Transversely trapping surfaces: Dynamical version
Hirotaka Yoshino, Keisuke Izumi, Tetsuya Shiromizu +1
We propose new concepts, a dynamically transversely trapping surface (DTTS) and a marginally DTTS, as indicators for a strong gravity region. A DTTS is defined as a two-dimensional…