212 citations · 1.4k across the 30 of their papers we have counts for
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Energy extraction from Kerr black holes by rigidly rotating strings
Shunichiro Kinoshita, Takahisa Igata, Kentaro Tanabe
In this paper, we show that a rigidly rotating string can extract the rotational energy from a rotating black hole. We consider Nambu-Goto strings stationary with respect to a coro…
Quasi-local characteristics of dynamical extreme black holes
Tetsuya Shiromizu, Sumio Yamada, Kentaro Tanabe
Introducing the concept of the extreme trapping horizon, we discuss geometric features of dynamical extreme black holes in four dimensions and then derive the integral identities w…
Static spacetimes with/without black holes in dynamical Chern-Simons gravity
Tetsuya Shiromizu, Kentaro Tanabe
We show that the static and asymptotically flat black hole spacetime is unique to be Schwarzschild spacetime in the dynamical Chern-Simons gravity. In addition, we show that the st…
Angular momentum at null infinity in higher dimensions
Kentaro Tanabe, Tetsuya Shiromizu, Shunichiro Kinoshita
We define the angular momentum at null infinity in higher dimensions. The asymptotic symmetry at null infinity becomes the Poincare group in higher dimensions. This fact implies th…
Late-time symmetry near black hole horizons
Kentaro Tanabe, Tetsuya Shiromizu, Shunichiro Kinoshita
It is expected that black holes are formed dynamically under the gravitational collapses and approach to the stationary states. In this paper, we show that the asymptotic Killing v…
Asymptotic flatness at null infinity in arbitrary dimensions
Kentaro Tanabe, Shunichiro Kinoshita, Tetsuya Shiromizu
We define the asymptotic flatness and discuss asymptotic symmetry at null infinity in arbitrary dimensions using the Bondi coordinates. To define the asymptotic flatness, we solve…