A second view on the X-ray polarization of NGC 4151 with IXPE

被引：0

作者：

Gianolli, V.E. ^{[1
,2
]}

Bianchi, S. ^{[2
]}

Kammoun, E. ^{[2
]}

Gnarini, A. ^{[2
]}

Marinucci, A. ^{[3
]}

Ursini, F. ^{[2
]}

Parra, M. ^{[1
,2
]}

Tortosa, A. ^{[4
]}

De Rosa, A. ^{[5
]}

Kim, D.E. ^{[5
,6
,7
]}

Marin, F. ^{[8
]}

Matt, G. ^{[2
]}

Serafinelli, R. ^{[4
]}

Soffitta, P. ^{[5
]}

Tagliacozzo, D. ^{[2
]}

Di Gesu, L. ^{[3
]}

Done, C. ^{[9
,10
]}

Marshall, H.L. ^{[11
]}

Middei, R. ^{[5
,12
]}

Mikusincova, R. ^{[5
]}

Petrucci, P.-O. ^{[1
]}

Ravi, S. ^{[11
]}

Svoboda, J. ^{[13
]}

Tombesi, F. ^{[7
,14
,15
]}

机构：

[1] Université Grenoble Alpes, CNRS, IPAG, Grenoble,38000, France

[2] Dipartimento di Matematica e Fisica, Università Degli Studi Roma Tre, Via della Vasca Navale 84, Roma,00146, Italy

[3] ASI -Agenzia Spaziale Italiana, Via del Politecnico snc, Roma,00133, Italy

[4] INAF -Astronomical Observatory of Rome, Via Frascati 33, Monte Porzio Catone,00040, Italy

[5] INAF Istituto di Astrofisica e Planetologia Spaziali, Via del Fosso del Cavaliere 100, Roma,I-00133, Italy

[6] Dipartimento di Fisica, Università Degli Studi di Roma la Sapienza, Piazzale Aldo Moro 5, Roma,I-00185, Italy

[7] Dipartimento di Fisica, Università Degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica 1, Roma,I-00133, Italy

[8] Université de Strasbourg, CNRS, Observatoire Astronomique de Strasbourg, UMR 7550, Strasbourg,67000, France

[9] Centre for Extragalactic Astronomy, Department of Physics, University of Durham, South Road, Durham,DH1 3LE, United Kingdom

[10] Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Kanagawa,252-5210, Japan

[11] MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge,MA,02139, United States

[12] Space Science Data Center, Agenzia Spaziale Italiana, Via del Politecnico snc, Roma,00133, Italy

[13] Astronomical Institute of the Czech Academy of Sciences, Bocňí II 1401/1, Praha 4,14100, Czech Republic

[14] Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, Roma,00133, Italy

[15] Department of Astronomy, University of Maryland, College Park,MD,20742, United States

来源：

Astronomy and Astrophysics | 2024年 / 691卷

基金：

美国国家航空航天局;

关键词：

Active Galactic Nuclei - Light polarization - Photons;

D O I：

10.1051/0004-6361/202451645

中图分类号：

学科分类号：

摘要：

We report on the second observing program of the active galactic nucleus NGC 4151 with simultaneous Imaging X-ray Polarimetry Explorer (IXPE; 750 ks), NuSTAR (∼60 ks), XMM-Newton (∼75 ks), and NICER (∼65 ks) pointings. NGC 4151 is the first Type-1 radio-quiet Seyfert galaxy with constrained polarization properties for the X-ray corona. Despite the lower flux state in which the source was re-observed and the resulting higher contribution of the constant reflection component in the IXPE energy band, our results are in agreement with the first detection. From polarimetric analysis, a polarization degree Π = 4.7 ± 1.3% and polarization angle Ψ = 77 ± 8 east of north (68% c.l.) were derived in the 2.0-8.0 keV energy range. Combining the two observations leads to polarization properties that are more constrained than those of the individual detections, showing Π = 4.5 ± 0.9% and Ψ = 81 ± 6 (with a detection significance of ∼4.6σ). The observed polarization angle aligns very well with the radio emission in this source, supporting, together with the significant polarization degree, a slab or wedge geometry for the X-ray corona. However, a switch in the polarization angle at low energies (37° ±7° in the 2-3.5 keV bin) suggests the presence of another component. When it is included in the spectro-polarimetric fit, a high polarization degree disfavors an interpretation in terms of a leakage through the absorbers, instead pointing to scattering from some kind of mirror. © The Authors 2024.

引用

共 50 条

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Gianolli, V. E.
Bianchi, S.
Kammoun, E.
Gnarini, A.
Marinucci, A.
Ursini, F.
Parra, M.
Tortosa, A.
De Rosa, A.
Kim, D. E.
Marin, F.
Matt, G.
Serafinelli, R.
Soffitta, P.
Tagliacozzo, D.
Di Gesu, L.
Done, C.
Marshall, H. L.
Middei, R.
Mikusincova, R.
Petrucci, P-O.
Ravi, S.
Svoboda, J.
Tombesi, F.
ASTRONOMY & ASTROPHYSICS, 2024, 691
[2] Uncovering the geometry of the hot X-ray corona in the Seyfert galaxy NGC 4151 with IXPE
Gianolli, V. E.
Kim, D. E.
Bianchi, S.
Agis-Gonzalez, B.
Madejski, G.
Marin, F.
Marinucci, A.
Matt, G.
Middei, R.
Petrucci, P. O.
Soffitta, P.
Tagliacozzo, D.
Tombesi, F.
Ursini, F.
Barnouin, T.
De Rosa, A.
Di Gesu, L.
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[7] INCREASE IN X-RAY ABSORPTION OF NGC 4151
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WHITE, NE
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[8] Swift Monitoring of NGC 4151: Evidence for a Second X-Ray/UV Reprocessing
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[9] X-Ray Polarization Detection of Cassiopeia A with IXPE
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Heyl, Jeremy
Marin, Frederic
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[10] VARIABLE X-RAY ABSORPTION IN NGC-4151
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