Resume

I investigated modified theories of gravity that predict up to six gravitational-wave polarizations propagating at different speeds. I developed a model-independent method to obtain these polarizations directly from the metric perturbation and extended the parameterized post-Einsteinian framework to accommodate varying propagation speeds. I also constructed a waveform template to assess how LIGO/Virgo observations could constrain Einstein-æther theory. In a separate project, I studied how differences in propagation speed affect the detectability of gravitational-wave signals. Finally, I contributed to the development of a new stochastic siren approach that uses the stochastic gravitational-wave background to inform measurements of the Hubble constant.