143 citations · 1.3k across the 30 of their papers we have counts for
7 papers · 1 filter
Measuring monster MBHs: maybe mighty, maybe merely massive
M. Gliozzi, A. Akylas, J. K. Williams +1
Accurate black hole mass (MBH) measurements in high-z galaxies are difficult yet crucial to constrain the growth of supermassive BHs, and to discriminate between competing BH seed…
Broadband X-ray/UV/optical time-resolved spectroscopy of NGC 5548: The origin of the UV/optical variability in active galactic nuclei
E. Kammoun, I. E. Papadakis, M. Dovčiak +1
Recently, nearby active galactic nuclei (AGN) have been subject to long X-rays/UV/optical monitoring campaigns. These campaigns reveal a strong correlation between the various UV a…
Comparing indirect methods for black hole masses in AGN: the good, the bad, and the ugly
M. Gliozzi, J. K. Williams, A. Akylas +4
The black hole mass MBH is crucial in constraining the growth of supermassive BHs within their host galaxies. Since direct measurements of MBH with dynamical methods are restricted…
Detection of X-ray/UV delay in NGC 4051 using AstroSat observations
Kavita Kumari, G. C. Dewangan, I. E. Papadakis +1
We study the connection between the variations in the far ultra-violet (FUV), near ultra-violet (NUV) and X-ray band emission from NGC 4051 using 4-days long AstroSat observations…
RoboPol: Connection between optical polarization plane rotations and gamma-ray flares in blazars
D. Blinov, V. Pavlidou, I. Papadakis +21
We use results of our 3 year polarimetric monitoring program to investigate the previously suggested connection between rotations of the polarization plane in the optical emission…
The nature of X-ray spectral variability in MCG-6-30-15
E. S. Kammoun, I. E. Papadakis
The flux-flux plot (FFP) method can provide model-independent clues regarding the X-ray variability of active galactic nuclei. To use it properly, the bin size of the light curves…