Polarization constraints on the X-ray corona in Seyfert Galaxies: MCG-05-23-16
- Creators
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Marinucci, A.
- Muleri, F.
- Dovciak, M.
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Bianchi, S.
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Marin, F.
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Matt, G.
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Ursini, F.
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Middei, R.
- Marshall, H. L.
- Baldini, L.
- Barnouin, T.
- Cavero Rodriguez, N.
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De Rosa, A.
- Di Gesu, L.
- Harper, D.
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Ingram, A.
- Karas, V.
- Krawczynski, H.
- Madejski, G.
- Panagiotou, C.
- Petrucci, P. O.
- Podgorny, J.
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Puccetti, S.
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Tombesi, F.
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Veledina, A.
- Zhang, W.
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Agudo, I.
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Antonelli, L. A.
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Bachetti, M.
- Baumgartner, W. H.
- Bellazzini, R.
- Bongiorno, S. D.
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Bonino, R.
- Brez, A.
- Bucciantini, N.
- Capitanio, F.
- Castellano, S.
- Cavazzuti, E.
- Ciprini, S.
- Costa, E.
- Del Monte, E.
- Di Lalla, N.
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Di Marco, A.
- Donnarumma, I.
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Doroshenko, V.
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Ehlert, S. R.
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Enoto, T.
- Evangelista, Y.
- Fabiani, S.
- Ferrazzoli, R.
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García, J. A.
- Gunji, S.
- Hayashida, K.
- Heyl, J.
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Iwakiri, W.
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Jorstad, S. G.
- Kitaguchi, T.
- Kolodziejczak, J. J.
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La Monaca, F.
- Latronico, L.
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Liodakis, I.
- Maldera, S.
- Manfreda, A.
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Marscher, A. P.
- Mitsuishi, I.
- Mizuno, T.
- Ng, C.-Y.
- O'Dell, S. L.
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Omodei, N.
- Oppedisano, C.
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Papitto, A.
- Pavlov, G. G.
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Peirson, A. L.
- Perri, M.
- Pesce-Rollins, M.
- Pilia, M.
- Possenti, A.
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Poutanen, J.
- Ramsey, B. D.
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Rankin, J. S.
- Ratheesh, A.
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Romani, R. W.
- Sgrš, C.
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Slane, P. O.
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Soffitta, P.
- Spandre, G.
- Tamagawa, T.
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Tavecchio, F.
- Taverna, R.
- Tawara, Y.
- Tennant, A. F.
- Thomas, N. E.
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Trois, A.
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Tsygankov, S. S.
- Turolla, R.
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Vink, J.
- Weisskopf, M. C.
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Wu, K.
- Xie, F.
- Zane, S.
Abstract
We report on the first observation of a radio-quiet active galactic nucleus (AGN) in polarized X-rays: the Seyfert 1.9 galaxy MCG-05-23-16. This source was pointed at with the Imaging X-ray Polarimetry Explorer (IXPE) starting on 2022 May 14 for a net observing time of 486 ks, simultaneously with XMM-Newton (58 ks) and NuSTAR (83 ks). A polarization degree Π smaller than 4.7 per cent (at the 99 per cent confidence level) 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 ± 0.01 and a high-energy cutoff E_C = 120 ± 15 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°.
Additional Information
We thank the anonymous referee for her/his comments and suggestions, which greatly improved the clarity of the paper. The IXPE is a joint US and Italian mission. The US contribution is supported by the National Aeronautics and Space Administration (NASA) and led and managed by its Marshall Space Flight Center (MSFC), with industry partner Ball Aerospace (contract NNM15AA18C). The Italian contribution is supported by the Italian Space Agency (ASI) through contract ASI-OHBI-2017-12-I.0, agreements ASI-INAF-2017-12-H0 and ASI-INFN-2017.13-H0, and its Space Science Data Center (SSDC), and by the Istituto Nazionale di Astrofisica (INAF) and the Istituto Nazionale di Fisica Nucleare (INFN) in Italy. This research used data products provided by the IXPE Team (MSFC, SSDC, INAF, and INFN) and distributed with additional software tools by the High-Energy Astrophysics Science Archive Research Center (HEASARC), at NASA Goddard Space Flight Center (GSFC). Part of the French contribution is supported by the Scientific Research National Center (CNRS) and the French spatial agency (CNES). MD, VK, and JP thank for the support from the GACR project 21-06825X and the institutional support from RVO:67985815. IA acknowledges financial support from the Spanish 'Ministerio de Ciencia e Innovación' (MCINN) through the 'Center of Excellence Severo Ochoa' award for the Instituto de Astrofísica de Andalucía-CSIC (SEV-2017-0709) and through grants AYA2016-80889-P and PID2019-107847RB-C44.Additional details
- Eprint ID
- 117685
- Resolver ID
- CaltechAUTHORS:20221101-827781300.7
- NNM15AA18C
- NASA
- ASI-OHBI-2017-12-I.0
- Agenzia Spaziale Italiana (ASI)
- ASI-INAF-2017-12-H0
- Agenzia Spaziale Italiana (ASI)
- ASI-INFN-2017.13-H0
- Agenzia Spaziale Italiana (ASI)
- Istituto Nazionale di Astrofisica (INAF)
- Istituto Nazionale di Fisica Nucleare (INFN)
- Centre National de la Recherche Scientifique (CNRS)
- Centre National d'Études Spatiales (CNES)
- 21-06825X
- Academy of Sciences of the Czech Republic
- RVO:67985815
- Academy of Sciences of the Czech Republic
- Ministerio de Ciencia e Innovación (MCINN)
- SEV-2017-0709
- Severo Ochoa
- AYA2016-80889-P
- Ministerio de Economía y Competitividad (MINECO)
- PID2019-107847RB-C44
- Ministerio de Ciencia e Innovación (MICINN)
- Created
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2022-11-11Created from EPrint's datestamp field
- Updated
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2023-03-16Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory