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Open AccessArticle

Spin Interaction under the Collision of Two Kerr-(Anti-)de Sitter Black Holes

by Bogeun Gwak 1,* and Daeho Ro 2
1
Department of Physics and Astronomy, Sejong University, Seoul 05006, Korea
2
Asia Pacific Center for Theoretical Physics, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Korea
*
Author to whom correspondence should be addressed.
Entropy 2017, 19(12), 691; https://doi.org/10.3390/e19120691
Received: 8 November 2017 / Revised: 8 December 2017 / Accepted: 14 December 2017 / Published: 15 December 2017
(This article belongs to the Section Astrophysics, Cosmology, and Black Holes)
We investigate herein the spin interaction during collisions between Kerr-(anti-)de Sitter black holes. The spin interaction potential depends on the relative rotation directions of the black holes, and this potential can be released as gravitational radiation upon collision. The energy of the radiation depends on the cosmological constant and corresponds to the spin interaction potential in the limit that one of the black holes has negligibly small mass and angular momentum. We then determine the approximate overall behaviors of the upper bounds on the radiation using thermodynamics. The results indicate that the spin interaction can consistently contribute to the radiation. In addition, the radiation depends on the stability of the black hole produced by the collision. View Full-Text
Keywords: black hole; thermodynamics; gravitational spin interaction black hole; thermodynamics; gravitational spin interaction
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Gwak, B.; Ro, D. Spin Interaction under the Collision of Two Kerr-(Anti-)de Sitter Black Holes. Entropy 2017, 19, 691.

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