期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.061102
关键词
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资金
- NSF [PHY-0653443, PHY-0653303, PHY-0555436, PHY-0114375, PHY-0354842]
- NASA [NNG 04GL37G]
- Texas Advanced Computation Center, University of Texas at Austin
- [TG-PHY060013N]
- Direct For Mathematical & Physical Scien
- Division Of Physics [0925345] Funding Source: National Science Foundation
The spin of the final black hole in the coalescence of nonspinning black holes is determined by the residual'' orbital angular momentum of the binary. This residual momentum consists of the orbital angular momentum that the binary is not able to shed in the process of merging. We study the angular momentum radiated, the spin of the final black hole, and the gravitational bursts in a sequence of equal mass encounters. The initial orbital configurations range from those producing an almost direct infall to others leading to numerous orbits before infall, with multiple bursts of radiation. Our sequence consists of orbits with fixed impact parameter. What varies is the initial linear momentum of the black holes. For this sequence, the final black hole of mass M-h gets a maximum spin parameter a/M-h approximate to 0.823, with this maximum occurring for initial orbital angular momentum L=M-h(2) approximate to 1.176.
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