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Self interaction of spins in binary systems. Mátyás Vasúth HAS KFKI Research Institute for Particle and Nuclear Physics Budapest, Hungary. Albert Einstein Century Conference 18 – 22 July, 2005 Paris, France. Introduction.

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## Self interaction of spins in binary systems

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**Self interaction of spins in binary systems**Mátyás Vasúth HAS KFKI Research Institute for Particle and Nuclear Physics Budapest, Hungary Albert Einstein Century Conference 18 – 22 July, 2005 Paris, France**Introduction**• Radiative evolution of compact binaries- circular orbits - secular losses • Change of the orbital angular frequency- PN, SO, SS, QM, DD, 2PN, SS-self and tail contributions • Accumulated number of GW cycles**Frequency evolution**• Circular orbits • Change of the orbital frequency**Frequency evolution**• Spin parameters**Accumulated number of GW cycles**• Dimensionless time variable**Numerical examples**• Number of accumulated GW cycles • Spin parameters for J0737-3039**Summary**• various contributions add to the rate of increase of the GW frequency and the accumulated number of GW cycles • contributions from the self interaction of the individual spins are commensurable with the proper spin-spin contributions and represent the first corrections to the radiation reaction in the Lense-Thirring picture

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