Superposed metric for spinning black hole binaries approaching merger
Superposed metric for spinning black hole binaries approaching merger
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旋转黑洞双星接近合并的叠加度量
DOI:
10.1103/physrevd.104.044041
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发表时间:
2021
影响因子:
5
通讯作者:
Bowen, Dennis
中科院分区:
文献类型:
--
作者:
Combi, Luciano;Armengol, Federico G.;Campanelli, Manuela;Ireland, Brennan;Noble, Scott C.;Nakano, Hiroyuki;Bowen, Dennis
We construct an approximate metric that represents the spacetime of spinning binary black holes (BBH) approaching merger. We build the metric as an analytical superposition of two Kerr metrics in harmonic coordinates, where we transform each black hole term with time-dependent boosts describing an inspiral trajectory. The velocities and trajectories of the boost are obtained by solving the post-Newtonian (PN) equations of motion at 3.5 PN order. We analyze the spacetime scalars of the new metric and we show that it is an accurate approximation of Einstein’s field equations in vacuum for a BBH system in the inspiral regime. Furthermore, to prove the effectiveness of our approach, we test the metric in the context of a 3D general relativistic magnetohydrodynamical (GRMHD) simulation of accreting minidisks around the black holes. We compare our results with a previous well-tested spacetime construction based on the asymptotic matching method. We conclude that our new spacetime is well-suited for long-term GRMHD simulations of spinning binary black holes on their way to the merger.
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DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
T. Damour;B. Iyer;B. Sathyaprakash
通讯作者:
B. Sathyaprakash
DOI:
10.1088/0004-637x/709/2/774
发表时间:
2009
期刊:
The Astrophysical Journal
影响因子:
--
作者:
J. Krolik
通讯作者:
J. Krolik
影响因子:
4.8
作者:
Tang, Yike;Haiman, Zoltán;MacFadyen, Andrew
通讯作者:
MacFadyen, Andrew
DOI:
10.1086/523869
发表时间:
2006-07
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. MacFadyen;M. Milosavljevic
通讯作者:
A. MacFadyen;M. Milosavljevic
DOI:
10.3847/1538-4357/aa63f3
发表时间:
2016-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Dennis B. Bowen;M. Campanelli;J. Krolik;V. Mewes;S. Noble
通讯作者:
Dennis B. Bowen;M. Campanelli;J. Krolik;V. Mewes;S. Noble