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A Multi-faceted View of the X-Ray Spectral Variability in Seyfert Galaxy Ark 120

Kang, Jia-Lai; Wang, Jun-Xian; Ren, Lu-Xin

Utilizing a range of techniques including multi-band light curves, softness ratio analysis, structure functions, rms spectra, cross-correlation functions, and ratios of spectra from different intervals, we present a comprehensive study of the complex X-ray spectral variability in Seyfert 1 galaxy Ark 120, through re-analyzing its six XMM-Newton ob…