| Name: M Laxman Affiliation: IIT Madras Conference ID: ASI2023_434 Title : Phase of gravitational wave from intermediate mass ratio inspirals of compact binary black hole systems. Authors and Co-Authors : M Laxman, Estuti Shukla, Ryuichi Fujita, Chandra Kant Mishra Abstract Type : Poster Abstract Category : General Relativity and Cosmology Abstract : While the ground-based detectors are particularly sensitive to the detection of comparable (stellar) mass binary black holes, the third-generation (3G) ground-based and space-based detectors, like LISA and DECIGO, will also be sensitive to very unequal mass binaries such as intermediate-mass ratio inspirals (IMRIs) and extreme mass ratio inspirals (EMRIs). The detection of gravitational waves from such unequal mass binaries (IMRIs/EMRIs) will allow us to map gravity in a strong field regime but their gravitational waveforms are not well understood. The post-Newtonian theory can be used to model any mass ratio inspirals but break down in the strong field regime, whereas, the black hole perturbation (BHP) theory can be used in strong field regimes but are only valid for extreme mass ratio inspirals. We compute the phase of such unequal mass binary systems (particularly IMRIs) by combining the inputs from the post-Newtonian (PN) and black hole perturbation (BHP) theory. The phase computed is 5PN (12PN) accurate in eccentric (circular) terms. |