The aperiodic X-ray variability in neutron star and black hole X-ray binaries (XRBs) and active galactic nuclei (AGN) shows a characteristic linear relationship between rms amplitude and flux,...
Correlated long-term optical and x-ray variations in NGC 5548 (2003)
Uttley, Phillip, Edelson, Rick, McHardy, Ian, Peterson, Bradley M., Markowitz, Alex
We combine the long-term optical light curve of the Seyfert 1 galaxy NGC5548 with the X-ray light curve measured by the Rossi X-ray Timing Explorer over 6 years, to determine the relationship between...