The variable ionized absorber in the Seyfert 2 Mrk 348
Date Issued
2014
Author(s)
Marchese, E.
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Reeves, J. N.
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Markowitz, A.
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Risaliti, G.
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Turner, T. J.
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 ionized. 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 ionized absorbers, together with a variation of the ionization level of the same absorber. We thus confirm one of the main features presented in past works, where intrinsic column density variability up to ∼10^23 cm-2 cm was observed on time-scales of months. We also find that the photon index of the underlying power-law continuum (Γ ∼ 1.8) is in agreement with the previous observations of this Seyfert 2.
Volume
437
Issue
3
Start page
2806
Issn Identifier
0035-8711
Ads BibCode
2014MNRAS.437.2806M
Rights
open.access
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