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http://hdl.handle.net/20.500.12386/34662
Titolo: | The variable ionized absorber in the Seyfert 2 Mrk 348 | Autori: | Marchese, E. BRAITO, Valentina Reeves, J. N. DELLA CECA, Roberto CACCIANIGA, Alessandro Markowitz, A. Risaliti, G. SEVERGNINI, Paola Turner, T. J. |
Data pubblicazione: | 2014 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 437 | Fascicolo: | 3 | Da pagina:: | 2806 | 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. | URI: | http://hdl.handle.net/20.500.12386/34662 | URL: | http://arxiv.org/abs/1312.2439v1 https://academic.oup.com/mnras/article/437/3/2806/1033876 |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stt2101 | Bibcode ADS: | 2014MNRAS.437.2806M | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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