Final spin and radiated energy in numerical simulations of binary black holes with equal masses and equal, aligned or antialigned spins
Final spin and radiated energy in numerical simulations of binary black holes with equal masses and equal, aligned or antialigned spins
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具有相等质量和相等、对齐或反对对齐自旋的双黑洞数值模拟中的最终自旋和辐射能量
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Teukolsky
中科院分区：
文献类型：
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作者：
D. Hemberger;G. Lovelace;T. Loredo;Lawrence E. Kidder;M. Scheel;B. Szil'agyi;N. W. Taylor;S. Teukolsky
合并黑洞的行为（包括发射的引力波和残余物的性质）目前只能通过数值模拟来计算。本文介绍了10个等质量等自旋与轨道角动量对准或反对准的双黑洞的相对论数值模拟。初始自旋幅度有|χ_i| 0.95，并且由于这种情况下更大的天体物理学兴趣，因此更集中在对齐方向上。我们结合联合收割机这些数据与以前报道的五个相同配置的模拟，但不同的自旋幅度，包括最高的自旋模拟日期，χ_i为0.97。这个数据集是足够准确的，使我们能够提供改进的解析拟合公式的最终自旋和引力波辐射的能量作为初始自旋的函数。改进后的拟合公式有助于提高我们对双黑洞合并残余物性质的理解，并可用于增强未来引力波搜索的近似波形，例如有效单体波形。
The behavior of merging black holes (including the emitted gravitational waves and the properties of the remnant) can currently be computed only by numerical simulations. This paper introduces ten numerical relativity simulations of binary black holes with equal masses and equal spins aligned or antialigned with the orbital angular momentum. The initial spin magnitudes have |χ_i|≲0.95 and are more concentrated in the aligned direction because of the greater astrophysical interest of this case. We combine these data with five previously reported simulations of the same configuration, but with different spin magnitudes, including the highest spin simulated to date, χ_i≈0.97. This data set is sufficiently accurate to enable us to offer improved analytic fitting formulas for the final spin and for the energy radiated by gravitational waves as a function of initial spin. The improved fitting formulas can help to improve our understanding of the properties of binary black hole merger remnants and can be used to enhance future approximate waveforms for gravitational wave searches, such as effective-one-body waveforms.
影响因子：
8.6
作者：
Ajith, P.;Hannam, M.;Seiler, J.
通讯作者：
Seiler, J.
影响因子：
4.9
作者：
Brenneman, L. W.;Reynolds, C. S.;Volonteri, M.
通讯作者：
Volonteri, M.