28 citations · 136 across the 11 of their papers we have counts for
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gr-qc2020★ 28 cited
Photon surfaces in less symmetric spacetimes
Yasutaka Koga, Takahisa Igata, Keisuke Nakashi
We investigate photon surfaces and their stability in a less symmetric spacetime, a general static warped product with a warping function acting on a Riemannian submanifold of codi…
gr-qc2020★ 15 cited
Towards rotating non-circular black holes in string-inspired gravity
Keisuke Nakashi, Masashi Kimura
We study stationary slowly rotating black holes, up to quadratic order in the spin angular momentum, in dynamical Chern-Simons gravity and shift symmetric Einstein scalar Gauss-Bon…