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首页> 外文期刊>International journal of modern physics, D. Gravitation, astrophysics, cosmology >Head-on collision and merging entropy of black holes: Reconsideration of Hawking's inequality
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Head-on collision and merging entropy of black holes: Reconsideration of Hawking's inequality

机译：正面碰撞和黑洞合并熵：对霍金不等式的重新思考

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摘要

We evaluate the amount of energy that can be converted into gravitational radiation in head-on collision of black holes. We estimate it by the area theorem of black hole horizon incorporating merging entropy of colliding black holes from a viewpoint of black hole thermodynamics. Then we obtain an upper bound of energy ratio of the gravitational radiation which is smaller than the upper bound originally derived by Hawking. The fact that this estimation is not inconsistent with the results of both numerical investigations in low- and high-energy head-on collision implies that thermodynamics of coalescing black holes requires the contribution of the merging entropy.
机译：我们评估了在黑洞正面碰撞中可以转换为重力辐射的能量。我们从黑洞热力学的角度，根据黑洞视界的面积定理，结合了碰撞的黑洞的合并熵，对其进行了估计。然后，我们获得了引力辐射的能量比的上限，该上限小于最初由霍金得出的上限。此估计与低能量和高能量正面碰撞中的数值研究结果均不一致的事实意味着，聚结黑洞的热力学需要合并熵的贡献。

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