MG15 - Talk detail

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Recent detections of gravitational waves by advanced LIGO promise a new means by which to investigate the universe and test general relativity. In this work, we present black hole dynamics using different models of gravity. We first consider a theory originating in the low energy limit of string theory and which includes additional scalar fields such as the dilaton and the axion. These scalar fields may be candidates for dark matter and dark energy. In addition, we investigate general relativity together with a massive vector field (a Proca field). Finally, we combine both systems by coupling the Proca field to the low energy string system. Using numerical simulations, we investigate dynamical black holes in these models. We consider a variety of initial data types in order to examine the stability of single black holes, the superradiant instability of massive vector fields around spinning black holes, and possible alternate scalar and electromagnetic field channels for emission. We also investigate binary black hole mergers in order to probe deviations from the standard gravitational wave signatures of general relativity.

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