The geometry of the hot corona in MCG-05-23-16 constrained by X-ray polarimetry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00581656" target="_blank" >RIV/67985815:_____/23:00581656 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/23:10476232
Result on the web
<a href="https://doi.org/10.1093/mnras/stad2627" target="_blank" >https://doi.org/10.1093/mnras/stad2627</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stad2627" target="_blank" >10.1093/mnras/stad2627</a>
Alternative languages
Result language
angličtina
Original language name
The geometry of the hot corona in MCG-05-23-16 constrained by X-ray polarimetry
Original language description
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.
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
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GX21-06825X" target="_blank" >GX21-06825X: Accreting Black Holes in the new era of X-ray polarimetry missions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
525
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
4735-4743
UT code for WoS article
001079289800010
EID of the result in the Scopus database
2-s2.0-85173579465