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arxiv: 1106.3278 · v2 · submitted 2011-06-16 · 🌀 gr-qc · astro-ph.HE

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Periastron Advance in Black-Hole Binaries

Alexandre Le Tiec , Abdul H. Mrou\'e , Leor Barack , Alessandra Buonanno , Harald P. Pfeiffer , Norichika Sago , Andrea Taracchini
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classification 🌀 gr-qc astro-ph.HE
keywords accurateadvanceanalyticbinariesgeneralmodelperiastronpredictions
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The general relativistic (Mercury-type) periastron advance is calculated here for the first time with exquisite precision in full general relativity. We use accurate numerical relativity simulations of spinless black hole binaries with mass ratios 1/8 < m1/m2 < 1 and compare with the predictions of several analytic approximation schemes. We find the effective-one-body model to be remarkably accurate, and, surprisingly, so also the predictions of self-force theory [replacing m1/m2 --> m1m2/(m1+m2)^2]. Our results can inform a universal analytic model of the two-body dynamics, crucial for ongoing and future gravitational-wave searches.

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Cited by 1 Pith paper

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