https://doi.org/10.1140/epjc/s10052-017-5123-z
Regular Article - Theoretical Physics
Dilaton field released under collision of dilatonic black holes with Gauss–Bonnet term
1
Department of Physics and Astronomy, Sejong University, Seoul, 05006, Republic of Korea
2
Asia Pacific Center for Theoretical Physics, POSTECH, Pohang, Gyeongbuk, 37673, Republic of Korea
* e-mail: rasenis@sejong.ac.kr
Received:
6
May
2017
Accepted:
28
July
2017
Published online:
17
August
2017
We investigate the upper limit of the gravitational radiation released upon the collision of two dilatonic black holes by analyzing the Gauss–Bonnet term. Dilatonic black holes have a dilaton hair coupled with this term. Using the laws of thermodynamics, the upper limit of the radiation is obtained, which reflected the effects of the dilaton hair. The amount of radiation released is greater than that emitted by a Schwarzschild black hole due to the contribution from the dilaton hair. In the collision, most of the dilaton hair can be released through radiation, where the energy radiated by the dilaton hair is maximized when the horizon of one black hole is minimized for a fixed second black hole.
© The Author(s), 2017
