A relativistic disc reflection model for 1H0419–577: Multi-epoch spectral analysis with XMM–Newton and NuSTAR. Issue 3 (28th November 2018)

• Record Type: Journal Article
• Authors: Jiang (姜), Jiachen (嘉陈); Walton, Dominic J; Fabian, Andrew C; Parker, Michael L
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 483:Issue 3(2019)
• Page Start: 2958
• Page End: 2967
• Publication Date: 2018-11-28
• Subjects: accretion, accretion discs -- black hole physics -- galaxies: Seyfert -- X-ray: galaxies; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/sty3228
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: 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 and 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$40{{\ \rm per\ cent}}$ of its Eddington limit and its X-ray band shows the hardest power-law continuum in the highest flux state, which was previously more commonly seen in AGNs with a low accretion rate (e.g. L x / L Edd < 10 −2 ). The NuSTAR observation shows a cool coronal temperature of$kT=30^{+22}_{-7}$ keV in the high flux state.