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arXiv · 2403.13194

X-ray analysis of Seyfert 1 galaxies with optical polarization: a test for unification models

Miriam Gudiño·Elena Jiménez-Bailón·Anna Lia Longinotti·Matteo Guainazzi·Miguel Cerviño·Aitor Robleto-Orús
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Abstract

In accordance with the AGN Unified Model, observed polarization can be related to the orientation of the line of sight with respect to the torus. AGN X-ray emission arises from the central region and carries the imprints of the obscuring material. We aim to test a unified scheme based on optical polarization using X-ray absorption. Using the XMM-Newton data of 19, optically polarized Seyfert 1 sources, we developed a systematic analysis by fitting a baseline model to test the presence of X-ray neutral or ionized (warm) absorption. We find that 100\% of the polar-polarized sources show the presence of absorption, with 70\% favoring the presence of a warm absorber. In contrast, the equatorial-polarized sources show a fraction of absorbed spectra of 75\%, with only 50\% consistent with the presence of a warm absorber.

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Miriam Gudiño, Elena Jiménez-Bailón, Anna Lia Longinotti, Matteo Guainazzi, Miguel Cerviño, Aitor Robleto-Orús. 2024-06-21. X-ray analysis of Seyfert 1 galaxies with optical polarization: a test for unification models. https://arxiv.org/abs/2403.13194

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