Investigating model dependencies for obscured active galactic nuclei: A case study of NGC 3982
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00585711" target="_blank" >RIV/67985815:_____/24:00585711 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/24:00135971
Result on the web
<a href="https://hdl.handle.net/11104/0353909" target="_blank" >https://hdl.handle.net/11104/0353909</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/ad3235" target="_blank" >10.3847/1538-4357/ad3235</a>
Alternative languages
Result language
angličtina
Original language name
Investigating model dependencies for obscured active galactic nuclei: A case study of NGC 3982
Original language description
X-ray spectroscopy of heavily obscured active galactic nuclei (AGN) offers a unique opportunity to study the circumnuclear environment of accreting supermassive black holes. However, individual models describing the obscurer have unique parameter spaces that give distinct parameter posterior distributions when fit to the same data. To assess the impact of model-specific parameter dependencies, we present a case study of the nearby heavily obscured low-luminosity AGN NGC 3982, which has a variety of column density estimations reported in the literature. We fit the same broadband XMM-Newton+NuSTAR spectra of the source with five unique obscuration models and generate posterior parameter distributions for each. By using global parameter exploration, we traverse the full prior-defined parameter space to accurately reproduce complex posterior shapes and inter-parameter degeneracies. The unique model posteriors for the line-of-sight column density are broadly consistent, predicting Compton-thick N-H > 1.5 x 10(24) cm(-2) at the 3 sigma confidence level. The posterior median intrinsic X-ray luminosity in the 2-10 keV band was found to differ substantially, however, with values in the range log L (2-10 keV)/ erg s(-1 )= 40.9-42.1 for the individual models. We additionally show that the posterior distributions for each model occupy unique regions of their respective multidimensional parameter spaces and how such differences can propagate into the inferred properties of the central engine. We conclude by showcasing the improvement in parameter inference attainable with the High Energy X-ray Probe, with its uniquely broad, simultaneous, and high-sensitivity bandpass of 0.2-80 keV.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA22-22643S" target="_blank" >GA22-22643S: Galactic gastronomy: Green Peas and Blueberries</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
966
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
20
Pages from-to
116
UT code for WoS article
001209441100001
EID of the result in the Scopus database
2-s2.0-85192148035