Title: Compact binary Coalescences: Constraints on waveforms

Speaker: Dr. Neev Khera, Penn State University, USA

Abstract: Gravitational wave detections of compact binary coalescences (CBCs) are reliant on accurate modelling. With upcoming future detectors, our models must improve by orders of magnitude. Exact general relativity applied to compact binary coalescences (CBCs) gives constraints that the waveforms must satisfy. These constraints can then be used as qualitatively new checks on the accuracy of waveform models. In this talk we see the derivation of these constraints using the Bondi-Metzner-Sachs (BMS) group and its associated balance laws in the context of CBCs. We also see applications of this work in understanding the issue of angular momentum ambiguities for CBCs in general asymptotically flat spacetimes.