First X-Ray Polarimetric View of a Low-luminosity Active Galactic Nucleus: The Case of NGC 2110 Article Swipe
Sudip Chakraborty
,
Ajay Ratheesh
,
Daniele Tagliacozzo
,
P. Kaaret
,
Jakub Podgorný
,
Frédéric Marin
,
Francesco Tombesi
,
Steven R. Ehlert
,
Chien‐Ting Chen
,
Dawoon E. Kim
,
Ioannis Liodakis
,
F. Ursini
,
R. Middei
,
Alessandro Di Marco
,
Fabio La Monaca
,
Srimanta Banerjee
,
Keigo Fukumura
,
W. Peter Maksym
,
Romana Mikus̆incová
,
Rodrigo Nemmen
,
Pierre-Olivier Petrucci
,
P. Soffitta
,
Jiří Svoboda
,
Wenda Zhang
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3847/1538-4357/ade87d
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3847/1538-4357/ade87d
Low-luminosity active galactic nuclei (LLAGN) provide a unique view of Comptonization and nonthermal emission from accreting black holes in the low accretion rate regime. However, to decipher the exact nature of the Comptonizing corona in LLAGN, its geometry and emission mechanism must be understood beyond the limits of spectro-timing techniques. Spectropolarimetry offers the potential to break the degeneracies between different coronal emission models. Compton-thin LLAGN provide an opportunity for such spectropolarimetric exploration in the 2–8 keV energy range using the Imaging X-Ray Polarimetry Explorer (IXPE). In this work, we carry out a spectropolarimetric analysis of the first IXPE observation, in synergy with a contemporaneous Nuclear Spectroscopic Telescope Array observation, of an LLAGN: NGC 2110. Using 554.4 ks of IXPE data from 2024 October, we constrain the 99% upper limit on the polarization degree (PD) to be less than 8.3% assuming the corresponding polarization angle (PA) to be aligned with the radio jet, and less than 3.6% if in the perpendicular direction. In the absence of a significant PD detection, the PA remains formally unconstrained, yet the polarization significance contours appear to be aligned with the radio jet, tentatively supporting models in which the corona is radially extended in the plane of the disk. We also carry out detailed Monte Carlo simulations using monk and STOKES codes to test different coronal models against our results and compare the polarization properties between NGC 2110 and brighter Seyferts.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/1538-4357/ade87d
- OA Status
- gold
- Cited By
- 1
- References
- 69
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4413832282
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4413832282Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/1538-4357/ade87dDigital Object Identifier
- Title
-
First X-Ray Polarimetric View of a Low-luminosity Active Galactic Nucleus: The Case of NGC 2110Work title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-08-29Full publication date if available
- Authors
-
Sudip Chakraborty, Ajay Ratheesh, Daniele Tagliacozzo, P. Kaaret, Jakub Podgorný, Frédéric Marin, Francesco Tombesi, Steven R. Ehlert, Chien‐Ting Chen, Dawoon E. Kim, Ioannis Liodakis, F. Ursini, R. Middei, Alessandro Di Marco, Fabio La Monaca, Srimanta Banerjee, Keigo Fukumura, W. Peter Maksym, Romana Mikus̆incová, Rodrigo Nemmen, Pierre-Olivier Petrucci, P. Soffitta, Jiří Svoboda, Wenda ZhangList of authors in order
- Landing page
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https://doi.org/10.3847/1538-4357/ade87dPublisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://doi.org/10.3847/1538-4357/ade87dDirect OA link when available
- Concepts
-
Physics, Astrophysics, Active galactic nucleus, Luminosity, Astronomy, Nucleus, Polarimetry, Galaxy, Scattering, Medicine, Optics, PsychiatryTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
1Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 1Per-year citation counts (last 5 years)
- References (count)
-
69Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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