Title: Testing strong gravity using X-ray reflection spectroscopy

Speaker: Professor Cosimo Bambi(“青年项目入选者、谢希德特聘教授)

Institute: 复旦大学(FUDAN)

Time: 2017.12.14（Thursday） 14:30

Place: Physics Building 573, Haiyun Campus, Xiamen University

Abstract: The spacetime metric around astrophysical black holes should be well approximated by the Kerr solution of Einstein's gravity, but macroscopic deviations from the Kerr metric are predicted by a number of alternative theories of gravity. X-ray reflection spectroscopy is potentially a powerful tool to probe the strong gravity region around black holes and test the Kerr hypothesis. In this talk, I will present the Xspec reflection model relxill_nk and current constraints on possible deviations from the Kerr background obtained from XMM-Newton and NuSTAR data.