Effects of the refractive index of the X-ray corona on the emission lines in AGN
P. Chainakun,
A. Watcharangkool,
A. J. Young
Abstract:X-ray reflection from an accretion disc produces characteristic emission lines allowing us to probe the innermost regions in AGN. We investigate these emission lines under a framework of Riemannian geometrical optics where the corona has a refractive index of n = 1. The empty space outside is a vacuum with n = 1. The Kerr metric is modified to trace the light rays that are bent due to not only the gravity of the black hole, but also the effects of coronal plasma dependent on n. The choice of n alters the null … Show more
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