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밝은 활동성 은하핵의 물리량과 변광특성 간의 상관관계 연구
Previous researches have reported that there is a marginal correlation between the properties of AGN variability and physical properties of AGNs. We present optical variability of nearby luminous active galactic nucleus (AGN). We use the multi-epoch data of 46 AGNs obtained from 2015 to 2019 through SNU AGN Monitoring Project (SAMP), which was carried out for the reverberation mapping of luminous AGNs. We estimated variability amplitudes and time scales using the various types of analytic function, such as structure function. We present the comparisons between physical properties of AGNs and optical variability in order to unveil the origin of the variability of AGNs. We find no clear evidence that the variability amplitude (A, σ^2 rms) is correlated with any physical parameters of AGNs. On the contrary, ϒ appears to be marginally correlated with the mass accretion rate and Eddington ratio of AGNs, but not strongly correlated with BH mass.