Modelling correlated variability in accreting black holes: the effect of high density and variable ionization on reverberation lags

@article{Mastroserio2021ModellingCV,
  title={Modelling correlated variability in accreting black holes: the effect of high density and variable ionization on reverberation lags},
  author={Guglielmo Mastroserio and Adam Ingram and Jingyi Wang and Javier A. Garc{\'i}a and Michiel van der Klis and Yuri Cavecchi and Riley M. T. Connors and Thomas Dauser and Fiona A. Harrison and Erin Kara and Ole K{\"o}nig and Matteo Lucchini},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
We present a new release of the reltrans model to fit the complex cross-spectrum of accreting black holes as a function of energy. The model accounts for continuum lags and reverberation lags self-consistently in order to consider the widest possible range of X-ray variability time-scales. We introduce a more self-consistent treatment of the reverberation lags, accounting for how the time variations of the illuminating flux change the ionization level of the accretion disc. This process… 

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