The new formula for gravitational radiation energy loss Applications to the axisymmetric two-body problem and the binary pulsar

Statistics – Computation

Scientific paper

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Axisymmetric Bodies, Binary Stars, Gravitational Waves, Pulsars, Relativity, Two Body Problem, Computational Astrophysics, Energy Dissipation, Equations Of State, Gauss Equation, Quadrupoles

Scientific paper

By accounting for nonlinearities and applying the Gauss theorem for retarded functions, the formula for gravitational radiation energy loss in general relativity is developed. This replaces the quadrupole formula, while clarifying the evident minimal domain of validity of the quadrupole formula. The new formula is considered in detail for the axisymmetric two-body problem with the conventional equation of state, epsilon = epsilon (Rho), where the nonlinear contributions are shown to cancel and the time-retardation contributions vanish individually. An order-of-magnitude analysis is performed for the binary pulsar, whereby it is found that both types of new contributions have the potential to compete with the quadrupole term.

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