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8 papers · 2 filters
Highly distorted apparent horizons and the hoop conjecture
Hirotaka Yoshino
By analyzing the apparent horizon (AH) formation in the collision of two pp-waves with rectangular sources in four dimensions, we study to what extent the AH can be distorted witho…
On conformal Killing-Yano tensors for Plebanski-Demianski family of solutions
David Kubiznak, Pavel Krtous
We present the explicit expressions for the conformal Killing-Yano tensors for the Plebanski-Demianski family of type D solutions in four dimensions. Some physically important spec…
Collision of high-energy closed strings: Formation of a ring-like apparent horizon
Hirotaka Yoshino, Tetsuya Shiromizu
We study collisions of two high-energy closed strings in the framework of -dimensional general relativity. The model of a high-energy closed string is introduced as a {/it pp}-w…
Interior of Distorted Black Holes
Valeri P. Frolov, Andrey A. Shoom
We study the interior of distorted static axisymmetric black holes. We obtain a general interior solution and study its asymptotics both near the horizon and singularity. As a spec…
Apparent horizon formation in the head-on collision of gyratons
Hirotaka Yoshino, Andrei Zelnikov, Valeri P. Frolov
The gyraton model describes a gravitational field of an object moving with the velocity of light which has finite energy and spin distributed during some finite time interval .…
Late-time behaviour of the tilted Bianchi type VIh models
S Hervik, R J van den Hoogen, W C Lim +1
We study tilted perfect fluid cosmological models with a constant equation of state parameter in spatially homogeneous models of Bianchi type VI_h using dynamical systems methods a…