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handle: 10281/325469
We analyze the inspiral dynamics of equal-mass precessing black-hole binaries using multi-timescale techniques. The orbit-averaged post-Newtonian evolutionary equations admit two constants of motion in the equal-mass limit, namely the magnitude of the total spin $S$ and the effective spin $��$. This feature makes the entire dynamics qualitatively different compared to the generic unequal-mass case, where only $��$ is constant while the variable $S$ parametrizes the precession dynamics. For fixed individual masses and spin magnitudes, an equal-mass black-hole inspiral is uniquely characterized by the two parameters $(S,��)$: these two numbers completely determine the entire evolution under the effect of radiation reaction. In particular, for equal-mass binaries we find that (i) the black-hole binary spin morphology is constant throughout the inspiral, and that (ii) the precessional motion of the two black-hole spins about the total spin takes place on a longer timescale than the precession of the total spin and the orbital plane about the total angular momentum.
13 pages, 1 figure, accepted for publication in CQG
High Energy Astrophysical Phenomena (astro-ph.HE), FOS: Physical sciences, black holes; gravitational waves; post-Newtonian theory;, General Relativity and Quantum Cosmology (gr-qc), 530, Astrophysics - Astrophysics of Galaxies, black holes, General Relativity and Quantum Cosmology, post-Newtonian theory, gravitational waves, Astrophysics of Galaxies (astro-ph.GA), Astrophysics - High Energy Astrophysical Phenomena, black holes, gravitational waves, general relativity, relativistic astrophysics
High Energy Astrophysical Phenomena (astro-ph.HE), FOS: Physical sciences, black holes; gravitational waves; post-Newtonian theory;, General Relativity and Quantum Cosmology (gr-qc), 530, Astrophysics - Astrophysics of Galaxies, black holes, General Relativity and Quantum Cosmology, post-Newtonian theory, gravitational waves, Astrophysics of Galaxies (astro-ph.GA), Astrophysics - High Energy Astrophysical Phenomena, black holes, gravitational waves, general relativity, relativistic astrophysics
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 16 | |
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influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |