Topic: The imprints of modified gravity by EMRI

Speaker: Prof. Ruihong Yue

Coordinates: PCFT C1124, 16:00, Thursday, October 20

Abstract: This talk is devoted to study the extreme mass ratio inspirals (EMRI) of a small compact object with scalar charge spiraling into a supermassive Kerr black hole.  We analyze both the tensorial GW and scalar radiation under the adiabatic approximation with and without second spin, and show that the energy fluxes and the gravitational wave dephasing accumulated during the process are evaluated. Moreover, a high spin black hole will enhance the effect of the scalar charge, and scalar field amplifies the second spin effect, which indicates the possibility of detecting the scalar charge by EMRI.