Prospects for differentiating extended coronal geometries in AGNs with the IXPE mission

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00555051" target="_blank" >RIV/67985815:_____/22:00555051 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1093/mnras/stab3745" target="_blank" >https://doi.org/10.1093/mnras/stab3745</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stab3745" target="_blank" >10.1093/mnras/stab3745</a>

Result language

angličtina

Original language name

Prospects for differentiating extended coronal geometries in AGNs with the IXPE mission

Original language description

X-ray polarimetry can potentially constrain the unknown geometrical shape of active galactic nucleous (AGN) coronae. We present simulations of the X-ray polarization signal expected from AGN coronae, assuming three different geometries, namely slab, spherical, and conical. We use the fully relativistic Monte Carlo Comptonization code MONK to compute the X-ray polarization degree and angle. We explore different coronal parameters such as shape, size, location, and optical depth. Different coronal geometries give a significantly different X-ray polarization signal. A slab corona yields a high polarization degree, up to 14 per cent depending on the viewing inclination a spherical corona yields low values, about 1-3 per cent, while a conical corona yields intermediate values. We also find a difference of 90 degrees in polarization angle between the slab corona and the spherical or conical coronae. Upcoming X-ray polarimetry missions like IXPE will allow us to observationally distinguish among different coronal geometries in AGNs for the first time.

Czech name

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Czech description

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Type

J_imp - 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)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

510

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

3674-3687

UT code for WoS article

000749577000037

EID of the result in the Scopus database

2-s2.0-85132850377