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Explore a new class of post-Newtonian approximants for binary system dynamics and gravitational wave phasing, proposing a complete adiabatic approximation with enhanced accuracy. This approach involves energy and flux truncation at specific post-Newtonian orders, enhancing the understanding of binary inspiral dynamics. Authors: P. Ajith, B.R. Iyer, C.A.K. Robinson, B.S. Sathyaprakash.
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A new class of post-Newtonian approximants to binary dynamics • Standard adiabatic approximation to GW phasing of inspiral binary takes energy and flux truncated to same PN order • In terms of dynamics equivalent to taking 0PN and 2.5PN terms in acceleration, and leaving out 1PN and 2PN • Propose a new complete adiabatic approximation which at leading order uses 2PN energy P.Ajith, Bala R. Iyer, C.A.K. Robinson, and B.S. Sathyaprakash