Energy versus angular momentum in black hole binaries

Title: Energy versus angular momentum in black hole binaries
Creator: Damour, T
Creator: Nagar, A
Creator: Pollney, D
Creator: Reisswig, C
Date Issued: 2011
Date: 2011
Type: Article
Identifier: vital:6792
Identifier: http://hdl.handle.net/10962/d1006946
Description: Using accurate numerical-relativity simulations of (nonspinning) black-hole binaries with mass ratios 1∶1, 2∶1, and 3∶1, we compute the gauge-invariant relation between the (reduced) binding energy E and the (reduced) angular momentum j of the system. We show that the relation E(j) is an accurate diagnostic of the dynamics of a black-hole binary in a highly relativistic regime. By comparing the numerical-relativity ENR(j) curve with the predictions of several analytic approximation schemes, we find that, while the canonically defined, nonresummed post-Newtonian–expanded EPN(j) relation exhibits large and growing deviations from ENR(j), the prediction of the effective one body formalism, based purely on known analytical results (without any calibration to numerical relativity), agrees strikingly well with the numerical-relativity results.
Format: 4 pages
Format: pdf
Language: English
Relation: Damour, T. and Nagar, A. and Pollney, D. and Reisswig, C. (2012) Energy versus angular momentum in black hole binaries. Physical Review Letters, 108 (13). p. 131101.Available at; http://dx.doi.org/10.1103/PhysRevLett.108.131101

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Pollney, Denis (Assoc Prof)

RU Department of Mathematics (Pure and Applied)

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