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pro vyhledávání: '"Gliozzi M"'
Autor:
Gliozzi, M., Williams, J. K., Akylas, A., Papadakis, I. E., Shuvo, O. I., Halavatkar, A., Alt, A.
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 to a limited number of nearly quiescent nearby galaxies and a small m
Externí odkaz:
http://arxiv.org/abs/2312.14098
Autor:
Gliozzi, M., Williams, J. K.
The soft X-ray excess - the excess of X-rays below 2 keV with respect to the extrapolation of the hard X-ray spectral continuum model - is a very common feature among type 1 active galactic nuclei (AGN); yet the nature of the soft X-ray excess is sti
Externí odkaz:
http://arxiv.org/abs/1910.12115
In our recent work, we demonstrated that a novel X-ray scaling method, originally introduced for Galactic black holes, could be reliably extended to estimate the mass of supermassive black holes accreting at moderate to high level. Here, we apply thi
Externí odkaz:
http://arxiv.org/abs/1708.05620
We report the results of a six-month Swift monitoring campaign of Ark120, a prototypical bare Seyfert1 galaxy. The lack of intrinsic absorption combined with the nearly contemporaneous coverage of the UV and X-ray bands makes it possible to investiga
Externí odkaz:
http://arxiv.org/abs/1610.04104
Autor:
Satyapal, S., Secrest, N. J., Rothberg, B., O'Connor, J., Ellison, S. L., Hickox, R. C., Constantin, A., Gliozzi, M., Rosenberg, J. L.
There is mounting evidence that supermassive black holes form and grow in bulgeless galaxies. However, a robust determination of the fraction of AGNs in bulgeless galaxies, an important constraint to models of supermassive black hole seed formation a
Externí odkaz:
http://arxiv.org/abs/1606.01268
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In a recent work we demonstrated that a novel X-ray scaling method, originally introduced for Galactic black holes (GBHs), can be reliably extended to estimate the mass of supermassive black holes accreting at a moderate to high level. Here we invest
Externí odkaz:
http://arxiv.org/abs/1405.5729
PKS 0558-504 is a highly variable, X-ray bright, radio-loud, Narrow-Line Seyfert 1 galaxy with super-Eddington accretion rate and extended jets that do not dominate the emission beyond the radio band. Therefore, this source represents an ideal labora
Externí odkaz:
http://arxiv.org/abs/1305.3573
The method of surrogates is one of the key concepts of nonlinear data analysis. Here, we demonstrate that commonly used algorithms for generating surrogates often fail to generate truly linear time series. Rather, they create surrogate realizations w
Externí odkaz:
http://arxiv.org/abs/1111.1414
Estimating the black hole mass at the center of galaxies is a fundamental step not only for understanding the physics of accretion, but also for the cosmological evolution of galaxies. Recently a new method, based solely on X-ray data, was successful
Externí odkaz:
http://arxiv.org/abs/1104.2758