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© 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.We report on the second observation of the radio-quiet active galactic nucleus MCG-05-23-16 performed with the Imaging X-ray Polarimetry Explorer (IXPE). The observation started on 2022 November 6 for a net observing time of 640 ks, and was partly simultaneous with NuSTAR (86 ks). After combining these data with those obtained in the first IXPE pointing on 2022 May (simultaneous with XMM-Newton and NuSTAR) we find a 2-8 keV polarization degree Π = 1.6 ± 0.7 (at 68 per cent confidence level), which corresponds to an upper limit Π = 3.2 per cent (at 99 per cent confidence level). We then compare the polarization results with Monte Carlo simulations obtained with the monk code, with which different coronal geometries have been explored (spherical lamppost, conical, slab, and wedge). Furthermore, the allowed range of inclination angles is found for each geometry. If the best-fitting inclination value from a spectroscopic analysis is considered, a cone-shaped corona along the disc axis is disfavoured.
Author(s): Tagliacozzo D, Marinucci A, Ursini F, Matt G, Bianchi S, Baldini L, Barnouin T, Cavero Rodriguez N, De Rosa A, Di Gesu L, Dovciak M, Harper D, Ingram A, Karas V, Kim DE, Krawczynski H, Madejski G, Marin F, Middei R, Marshall HL, Muleri F, Panagiotou C, Petrucci P-O, Podgorny J, Poutanen J, Puccetti S, Soffitta P, Tombesi F, Veledina A, Zhang W, Agudo I, Antonelli LA, Bachetti M, Baumgartner WH, Bellazzini R, Bongiorno SD, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano S, Cavazzuti E, Chen C-T, Ciprini S, Costa E, Del Monte E, Di Lalla N, Di Marco A, Donnarumma I, Doroshenko V, Ehlert SR, Enoto T, Evangelista Y, Fabiani S, Ferrazzoli R, Garcia JA, Gunji S, Heyl J, Iwakiri W, Jorstad SG, Kaaret P, Kislat F, Kitaguchi T, Kolodziejczak JJ, La Monaca F, Latronico L, Liodakis I, Maldera S, Manfreda A, Marscher AP, Massaro F, Mitsuishi I, Mizuno T, Negro M, Ng C-Y, O'Dell SL, Omodei N, Oppedisano C, Papitto A, Pavlov GG, Peirson AL, Perri M, Pesce-Rollins M, Pilia M, Possenti A, Ramsey BD, Rankin J, Ratheesh A, Roberts OJ, Romani RW, Sgro C, Slane P, Spandre G, Swartz DA, Tamagawa T, Tavecchio F, Taverna R, Tawara Y, Tennant AF, Thomas NE, Trois A, Tsygankov SS, Turolla R, Vink J, Weisskopf MC, Wu K, Xie F, Zane S
Publication type: Article
Publication status: Published
Journal: Monthly Notices of the Royal Astronomical Society
Year: 2023
Volume: 525
Issue: 3
Pages: 4735-4743
Print publication date: 01/11/2023
Online publication date: 01/09/2023
Acceptance date: 28/07/2023
ISSN (print): 0035-8711
ISSN (electronic): 1365-2966
Publisher: Oxford University Press
URL: https://doi.org/10.1093/mnras/stad2627
DOI: 10.1093/mnras/stad2627
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