X-Ray Spectral Parameters for a Sample of 95 Active Galactic Nuclei

Abstract

We present a broadband X-ray analysis of a new homogeneous sample of 95 active galactic nuclei (AGN) from the 22-month Swift/BAT all-sky survey. For this sample we treated jointly the X-ray spectra observed by XMM-Newton and INTEGRAL missions for the total spectral range of 0.5-250 keV. Photon index Γ, relative reflection R, equivalent width of Fe $K_{\alpha }$ line (EW Fe $K_{\alpha }$), hydrogen column density $N_H$, exponential cut-off energy $E_c$ and intrinsic luminosity $L_{corr}$ are determined for all objects of the sample. We investigated correlations Γ- R, EW Fe $K_{\alpha }$ - $L_{corr}$, Γ- $E_c$, EW Fe $K_{\alpha }$ - $N_H$. Dependence Γ- R for Seyfert 1 and 2 type of galaxies has been investigated separately. We found that the relative reflection parameter at low power-law indexes for Seyfert 2 galaxies is systematically higher than for Seyfert 1 ones. This can be related to an increasing contribution of the reflected radiation from the gas-dust torus. Our data show that there exists some anticorrelation between EW Fe $K_{\alpha }$ and $L_{corr}$, but it is not strong. We have not found statistically significant deviations from the AGN Unified Model.

23 pages, 7 figures, 4 tables, accepted for publication in Astrophysics and Space Science

References in corpus (19)

• Suzaku Observations of Active Galactic Nuclei Detected in the Swift/BAT Survey: Discovery of "New Type" of Buried Supermassive Black Holes
• The X-ray and Radio Connection in Low-luminosity Active Nuclei
• Seyfert galaxies in the local Universe (z$\le$ 0.1): the average X-ray spectrum as seen by $BeppoSAX$
• On the Iwasawa-Taniguchi effect of radio-quiet AGN
• X-ray properties of an Unbiased Hard X-ray Detected Sample of AGN
• On the origin of the Fe K-alpha line cores in Active Galactic Nuclei
• Iron K$\alpha$ emission in type-I and type-II Active Galactic Nuclei
• The Spitzer mid-infrared AGN survey. I - optical and near-infrared spectroscopy of candidate obscured and normal AGN selected in the mid-infrared
• An XMM-Newton view of FeKα in HMXBs
• Hard X-ray spectra of AGN in the INTEGRAL complete sample
• The narrow Fe K$\alpha$ line and the molecular torus in active galactic nuclei - an IR/X-ray view
• A Chandra view of the clumpy reflector at the heart of the Circinus galaxy
• The broad-band XMM-Newton and INTEGRAL spectra of bright type 1 Seyfert galaxies
• The average 0.5-200 keV spectrum of local active galactic nuclei and a new determination of the 2-10 keV luminosity function at z \approx 0
• An X-ray view of absorbed INTEGRAL AGN
• IGR J16351-5806: another close by Compton-thick AGN
• A broad-band spectral analysis of eight radio loud type 1 AGN selected in the hard X-ray band
• Obscuring clouds playing hide-and-seek in the Active Nucleus H0557-385
• Broadband X-ray spectrum of the newly discovered broad line radio galaxy IGR J21247+5058

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• The broad-band spectrum of the Narrow-line Seyfert 1 NGC 4748: from UV to hard X-ray
• The obscured active nucleus of NGC 7172 as seen by NuSTAR