Compton-Thick AGN in the NuSTAR era VII. A joint NuSTAR, Chandra and XMM-Newton analysis of two nearby, heavily obscured sources

Abstract

We present the joint Chandra, XMM-Newton and NuSTAR analysis of two nearby Seyfert galaxies, NGC 3081 and ESO 565-G019. These are the only two having Chandra data in a larger sample of ten low redshift ($z\le 0.05$), candidates Compton-thick Active Galactic Nuclei (AGN) selected in the 15-150 keV band with Swift-BAT that were still lacking NuSTAR data. Our spectral analysis, performed using physically-motivated models, provides an estimate of both the line-of-sight (l.o.s.) and average (N${}_{H,S}$) column densities of the two torii. NGC 3081 has a Compton-thin l.o.s. column density N${}_{H,z}$=[0.58-0.62] $\times 10^{24}$cm${}^{-2}$, but the N${}_{H,S}$, beyond the Compton-thick threshold (N${}_{H,S}$=[1.41-1.78] $\times 10^{24}$cm${}^{-2}$), suggests a "patchy" scenario for the distribution of the circumnuclear matter. ESO 565-G019 has both Compton-thick l.o.s. and N${}_{H,S}$ column densities (N${}_{H,z}>$2.31 $\times 10^{24}$cm${}^{-2}$ and N${}_{H,S}>$2.57 $\times 10^{24}$cm${}^{-2}$, respectively). The use of physically-motivated models, coupled with the broad energy range covered by the data (0.6-70 keV and 0.6-40 keV, for NGC 3081 and ESO 565-G019, respectively) allows us to constrain the covering factor of the obscuring material, which is C${}_{TOR}$=[0.63-0.82] for NGC 3081, and C${}_{TOR}$=[0.39-0.65] for ESO 565-G019.

arXiv comment15 pages, 22 figures, Accepted for publication on ApJ

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• Compton-Thick AGN in the NuSTAR era VIII: A joint NuSTAR-XMM-Newton monitoring of the changing-look Compton-thick AGN NGC 1358
• A High Fraction of Heavily X-ray Obscured Active Galactic Nuclei
• Compton-thick AGN in the NuSTAR Era. IX. A Joint NuSTAR and XMM-Newton Analysis of Four Local AGN
• Compton-thick AGN in the NuSTAR Era X: Analysing seven local CT-AGN candidates
• The Compton-thick AGN luminosity function in the local Universe: A robust estimate combining BAT detections and NuSTAR spectra
• A Multi-Wavelength Characterization of the Obscuring Medium at the Center of NGC 6300
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• The properties of the obscuring material of an AGNs sample from mid-IR and X-ray simultaneous fitting
• Chandra Follow-up Observations of Swift-BAT-selected AGNs II