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Torus Constraints in ANEPD-CXO245: A Compton-thick AGN with Double-peaked Narrow Lines

Abstract : We report on the torus constraints of the Compton-thick active galactic nucleus (AGN) with double-peaked optical narrow-line region emission lines, ANEPD-CXO245, at z = 0.449 in the AKARI NEP Deep Field. The unique infrared data on this field, including those from the nine-band photometry over 2-24 μm with the AKARI Infrared Camera, and the X-ray spectrum from Chandra allow us to constrain torus parameters such as the torus optical depth, X-ray absorbing column, torus angular width (σ), and viewing angle (i). We analyze the X-ray spectrum as well as the UV-optical-infrared spectral energy distribution (UOI-SED) with clumpy torus models in X-ray (XCLUMPY) and infrared (CLUMPY), respectively. From our current data, the constraints on σ-i from both X-rays and UOI show that the line of sight crosses the torus as expected for a type 2 AGN. We obtain a small X-ray scattering fraction (<0.1%), which suggests narrow torus openings, giving preference to the bipolar outflow picture of the double-peaked profile. Comparing the optical depth of the torus from the UOI-SED and the absorbing column density N H from the X-ray spectrum, we find that the gas-to-dust ratio is ≳4 times larger than the Galactic value.
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https://hal-insu.archives-ouvertes.fr/insu-03666715
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Submitted on : Thursday, May 12, 2022 - 4:46:54 PM
Last modification on : Saturday, May 14, 2022 - 3:03:54 AM

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Takamitsu Miyaji, Martín Herrera-Endoqui, Mirko Krumpe, Masaki Hanzawa, Ayano Shogaki, et al.. Torus Constraints in ANEPD-CXO245: A Compton-thick AGN with Double-peaked Narrow Lines. The Astrophysical Journal Letters, 2019, 884, ⟨10.3847/2041-8213/ab46bc⟩. ⟨insu-03666715⟩

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