The shape of Fe K α line emitted from relativistic accretion disc around AGN black holes

Milošević, Milan, Pursiainen, Miika A., Jovanović, Predrag and Popović, Luka C. (2018) The shape of Fe K α line emitted from relativistic accretion disc around AGN black holes. International Journal of Modern Physics A, 33 (34), [1845016]. (doi:10.1142/S0217751X18450161).

Abstract

The relativistically broadened Fe Kα line, originating from the accretion disc in a vicinity of a super massive black hole, is observed in only less than 50% of type 1 Active Galactic Nuclei (AGN). In this study, we investigate could this lack of detections be explained by the effects of certain parameters of the accretion disc and black hole, such as the inclination, the inner and outer radius of disc and emissivity index. In order to determine how these parameters affect the Fe Kα line shape, we simulated about 60,000 Fe Kα line profiles emitted from the relativistic disc. Based on simulated line profiles, we conclude that the lack of the Fe Kα line detection in type 1 AGN could be caused by the specific emitting disc parameters, but also by the limits in the spectral resolution and sensitivity of the X-ray detectors.

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