## Title: *Use Data to Investigate Charge of Black Hole*
## Reporter: Wen-Hong Ruan
## Abstract
Motivated by the gauge problem of induced GWs, we investigate the energy of GWs. In this seminar, I will talk about the gravitational energy in the general relativity, show how to obtain the definition for energy of GWs, and how to solve the gauge problem of induced GWs based on such a definition.
In this group seminar, I will first introduce the orbit equation of the binary system with electric and magnetic charges. Then I will talk about the zeroth order post-Newtonian waveform for charged binary black holes. Finally, I will talk about how to use the waveform as a template to fit LIGO’s data.
