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Title: Third post-Newtonian angular momentum flux and the secular evolution of orbital elements for inspiralling compact binaries in quasi-elliptical orbits
Authors: Arun, K.G.
Blanchet, Luc
Iyer, B.R.
Sinha, Siddhartha
Issue Date: 11-Dec-2009
Publisher: American Physical Society
Citation: Physical Review D, 2009, Vol.80, p124018
Abstract: The angular-momentum flux from an inspiralling binary system of compact objects moving in quasi-elliptical orbits is computed at the third post-Newtonian (3PN) order using the multipolar post-Minkowskian wave generation formalism. The 3PN angular-momentum flux involves the instantaneous, tail, and tail-of-tails contributions as for the 3PN energy flux, and in addition a contribution due to nonlinear memory. We average the angular-momentum flux over the binary’s orbit using the 3PN quasi-Keplerian representation of elliptical orbits. The averaged angular-momentum flux provides the final input needed for gravitational-wave phasing of binaries moving in quasi-elliptical orbits. We obtain the evolution of orbital elements under 3PN gravitational radiation reaction in the quasi-elliptic case. For small eccentricities, we give simpler limiting expressions relevant for phasing up to order e2. This work is important for the construction of templates for quasi-eccentric binaries, and for the comparison of post-Newtonian results with the numerical relativity simulations of the plunge and merger of eccentric binaries.
Description: Open Access.
ISSN: 1550-2368 (Online)
Alternative Location: 10.1103/PhysRevD.80.124018
Copyright: 2009 The American Physical Society
Appears in Collections:Research Papers (TP)

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