DR. BHOOSHAN GADRE

Gravitational waves (GW) emitted by merging binary black holes (BBH) depend upon 8 parameters assuming quasi-circular orbits, namely individual masses and initial spins configuration. To model these generic GW given initial configuration, we require to solve 12 coupled differential equations. Though it is possible to solve them exactly assuming GR as underlying theory, it is computationally expensive. But to fully characterize the detected BBH merger, Bayesian parameter estimation methods are used. These require us to model millions of GW from these mergers. To achieve this, we try to use various approximate methods or fits to get accurate enough gravitational wave models. In the talk, the speaker will discuss one of the ways using which faster precessing BBH merger model is being developed using effective-one-body (EOB) formalism. We model precessional dynamics and waveform separately and combine them to get the final waveform which is accurate enough. This model will allow us to better understand the merging of highly spinning BBH and hence about their formation.