Polarization constraints on the X-ray corona in Seyfert Galaxies: MCG-05-23-16
Creators: name: Marinucci, A.
name: Muleri, F.
name: Dovčiak, M.
name: Bianchi, S.
name: Marin, F.
name: Matt, G.
name: Ursini, F.
name: Middei, R.
name: Marshall, H. L.
name: Baldini, L.
name: Barnouin, T.
name: Rodriguez, N. Cavero
name: De Rosa, A.
name: Di Gesu, L.
name: Harper, D.
name: Ingram, A.
name: Karas, V.
name: Krawczynski, H.
name: Madejski, G.
name: Panagiotou, C.
name: Petrucci, P. O.
name: Podgorny, J.
name: Puccetti, S.
name: Tombesi, F.
name: Veledina, A.
name: Zhang, W.
name: Agudo, I.
name: Antonelli, L. A.
name: Bachetti, M.
name: Baumgartner, W. H.
name: Bellazzini, R.
name: Bongiorno, S. D.
name: Bonino, R.
name: Brez, A.
name: Bucciantini, N.
name: Capitanio, F.
name: Castellano, S.
name: Cavazzuti, E.
name: Ciprini, S.
name: Costa, E.
name: Del Monte, E.
name: Di Lalla, N.
name: Di Marco, A.
name: Donnarumma, I.
name: Doroshenko, V.
name: Ehlert, S. R.
name: Enoto, T.
name: Evangelista, Y.
name: Fabiani, S.
name: Ferrazzoli, R.
name: Garcia, J. A.
name: Gunji, S.
name: Hayashida, K.
name: Heyl, J.
name: Iwakiri, W.
name: Jorstad, S. G.
name: Kitaguchi, T.
name: Kolodziejczak, J. J.
name: La Monaca, F.
name: Latronico, L.
name: Liodakis, I.
name: Maldera, S.
name: Manfreda, A.
name: Marscher, A. P.
name: Mitsuishi, I.
name: Mizuno, T.
name: Ng, C. -Y.
name: O'Dell, S. L.
name: Omodei, N.
name: Oppedisano, C.
name: Papitto, A.
name: Pavlov, G. G.
name: Peirson, A. L.
name: Perri, M.
name: Pesce-Rollins, M.
name: Pilia, M.
name: Possenti, A.
name: Poutanen, J.
name: Ramsey, B. D.
name: Rankin, J.
name: Ratheesh, A.
name: Romani, R. W.
name: Sgrò, C.
name: Slane, P.
name: Soffitta, P.
name: Spandre, G.
name: Tamagawa, T.
name: Tavecchio, F.
name: Taverna, R.
name: Tawara, Y.
name: Tennant, A. F.
name: Thomas, N. E.
name: Trois, A.
name: Tsygankov, S. S.
name: Turolla, R.
name: Vink, J.
name: Weisskopf, M. C.
name: Wu, K.
name: Xie, F.
name: Zane, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report on the first observation of a radio-quiet Active Galactic Nucleus (AGN) using polarized X-rays: the Seyfert 1.9 galaxy MCG-05-23-16. This source was pointed with the Imaging X-ray Polarimetry Explorer (IXPE) starting on May 14, 2022 for a net observing time of 486 ks, simultaneously with XMM-Newton (58 ks) and NuSTAR (83 ks). A polarization degree smaller than $Π&lt;4.7\%$ (at the 99% c.l.) is derived in the 2-8 keV energy range, where emission is dominated by the primary component ascribed to the hot corona. The broad-band spectrum, inferred from a simultaneous fit to the IXPE, NuSTAR, and XMM-Newton data, is well reproduced by a power law with photon index $Γ=1.85\pm0.01$ and a high-energy cutoff $E_{\rm C}=120\pm15$ keV. A comparison with Monte Carlo simulations shows that a lamp-post and a conical geometry of the corona are consistent with the observed upper limit, a slab geometry is allowed only if the inclination angle of the system is less than 50$^{\circ}$.
description: 7 pages, 3 figures, 1 table. Submitted to MNRAS Letters