MG13 - Talk detail

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Abstract

We consider the evolution of the compact binary in quadratic gravity which is motivated from string theory. We apply the post-Newtonian (PN) formalism but to take the strong field effect into account, we first match the near zone PN solution with the known black hole solution in this theory to obtain an effective source term that contains strong field information. With this at hand, we calculate the energy flux carried away by both gravitational and scalar radiation at infinity and derive the correction in the binary gravitational waveform. Then, we calculate the possible constraint on this theory from current low-mass X-ray binary observations and future gravitational wave interferometers. We found that they can place more than six orders of magnitude stronger constraint than the current solar system experiments.

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