IPM Calendar 
Friday 20 July 2018   Today  
Events for day: Sunday 20 August 2017    
           14:00 - 15:30     Weekly Seminar
Testing the Kerr Black Hole Hypothesis: X-ray Reflection Spectroscopy


Iron line method is a powerful technique to unveil properties of strong gravity regime and constrain non-Kerr spacetime but it is degenerate and high-quality data is necessary. More recently, there have been studies to use this technique to test the nature of astrophysical black holes (BHs) and verify the Kerr BH hypothesis. Geometrically thin and optically thick accretion disk emits fluorescence narrow lines by hard X-ray photon of optically thin comptonized corona. The strongest line is the iron Kalpha ...