Title: Testing strong gravity using X-ray reflection spectroscopy

Speaker: Professor Cosimo Bambi(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.