Maximum kick from nonspinning black-hole binary inspiral.
Maximum kick from nonspinning black-hole binary inspiral.
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DOI：
10.1103/physrevlett.98.091101
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发表时间：
2006-10
影响因子：
8.6
通讯作者：
José A. González;U. Sperhake;B. Brügmann;M. Hannam;S. Husa
中科院分区：
文献类型：
--
作者：
José A. González;U. Sperhake;B. Brügmann;M. Hannam;S. Husa
当不等质量黑洞合并时，由于合并过程中发射的引力辐射中的线性动量的不对称损失，最终的黑洞会受到一次反冲。这种反冲的强度具有重要的天体物理学后果。最近在数值相对论的突破，使我们能够进行最大的参数研究，迄今为止进行的数值模拟的双黑洞inspirals。我们研究质量比为q=M1/M2=1至q=0.25（eta=q/（1+q）2为0.25至0.16）的非旋转黑洞双星。我们精确地计算出反冲的速度在6%以内，黑洞的最终旋转在2%以内。当eta=0.195+/-0.005时，最大井涌为175.2+/-11 km s（-1）。
When unequal-mass black holes merge, the final black hole receives a kick due to the asymmetric loss of linear momentum in the gravitational radiation emitted during the merger. The magnitude of this kick has important astrophysical consequences. Recent breakthroughs in numerical relativity allow us to perform the largest parameter study undertaken to date in numerical simulations of binary black-hole inspirals. We study nonspinning black-hole binaries with mass ratios from q=M1/M2=1 to q=0.25 (eta=q/(1+q)2 from 0.25 to 0.16). We accurately calculate the velocity of the kick to within 6%, and the final spin of the black holes to within 2%. A maximum kick of 175.2+/-11 km s(-1) is achieved for eta=0.195+/-0.005.