Publisher： Cambridge University Press
E-ISSN： 1743-9221|12|S324|176-179
ISSN： 1743-9213
Source： Proceedings of the International Astronomical Union, Vol.12, Iss.S324, 2017-06, pp. : 176-179
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Abstract
Here we present the evidence for periodicity of an optical emission detected in several AGN. Significant periodicity is found in light curves and radial velocity curves. We discuss possible mechanisms that could produce such periodic variability and their implications. The results are consistent with possible detection of the orbital motion in proximity of the AGN central supermassive black holes.
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