We present a detailed analysis of the spectral properties of the Seyfert 1 galaxy 1H0419-577, based on the archival XMM-Newton, NuSTAR and simultaneous Swift observations taken between 2002-2015. All the observations show a broad emission line feature at the iron band. We demonstrate that the broad band spectral variability at different levels can be explained by the combination of light-bending effects in the vicinity of the central black hole plus a thin warm absorber. We obtain a black hole spin of a > 0.98 by fitting the multi-epoch spectra with the relativistic disc reflection model. 1H0419-577 is accreting at 40% of its Eddington limit and its X-ray band shows the hardest powerlaw continuum in the highest flux state, which was previously more commonly seen in AGNs with a low accretion rate (e.g. LX/LEdd<10−2). The NuSTAR observation shows a cool coronal temperature of kT=30−7+22keV in the high flux state.
@article{arxiv.1811.10932,
title = {A Relativistic Disc Reflection Model for 1H0419-577: Multi-Epoch Spectral Analysis with XMM-Newton and NuSTAR},
author = {Jiachen Jiang and Dominic J. Walton and Andrew C. Fabian and Michael L. Parker},
journal= {arXiv preprint arXiv:1811.10932},
year = {2018}
}