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arXiv · 1312.2439

The variable ionized absorber in the Seyfert 2 Mrk 348

E. Marchese·V. Braito·J. N Reeves·R. Della Ceca·A. Caccianiga·A. Markowitz·G. Risaliti·P. Severgnini·T. J. Turner
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Abstract

We present the results of the analysis of the X-ray spectrum of the Seyfert 2 Mrk 348, observed by Suzaku and XMM-Newton. The overall spectrum of Mrk 348 can be described by a primary power law continuum seen through three layers of absorption, of which one is neutral and two are ionised. Comparing Suzaku (2008) and XMM-Newton (2002) observations we find variability of the X-ray spectral curvature. We suggest that the variability can be explained through the change of column density of both the neutral and one of the ionised absorbers, together with a variation of the ionisation level of the same absorber. We thus confirm one of the main features presented in past works, where intrinsic column density variability up to $\sim 10^{23}$~cm$^{-2}$ was observed on time scales of months. We also find that the photon index of the underlying power law continuum ($Γ\sim 1.8$) is in agreement with the previous observations of this Seyfert 2.

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E. Marchese, V. Braito, J. N Reeves, R. Della Ceca, A. Caccianiga, A. Markowitz, G. Risaliti, P. Severgnini, T. J. Turner. 2013-12-09. The variable ionized absorber in the Seyfert 2 Mrk 348. https://doi.org/10.1093/mnras%2Fstt2101

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