Polarization of emission from black hole accretion disks: including returning radiation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00567704" target="_blank" >RIV/67985815:_____/22:00567704 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1142/9789811258251_0021" target="_blank" >http://dx.doi.org/10.1142/9789811258251_0021</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1142/9789811258251_0021" target="_blank" >10.1142/9789811258251_0021</a>

Result language
angličtina
Original language name
Polarization of emission from black hole accretion disks: including returning radiation
Original language description
Accretion disks around stellar-mass black holes (BHs) are observed to emit radiation peaking in the soft X-rays (at about 1 keV) when the source is in the thermal state. This emission is expected to be polarized, because of electron scattering in the disk. However, photons will experience a rotation of the polarization plane due to General Relativity effects. X-ray polarization measurements can then be crucial in assessing strong gravity effects around accreting stellar-mass BHs, providing independent constraints on their spin. In this work, we present the simulated polarization spectra (obtained according to the model by Dovčiak et al.) for the X-ray, thermal radiation emitted by the accretion disk, as expected to be measured by IXPE, an X-ray polarimeter which will be launched in 2021. We also illustrate the code, currently under development, incorporate the contribution of returning radiation and account for absorption effects by the disk material.
Czech name
—
Czech description
—

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

Article name in the collection
The Fifteenth Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories
ISBN
978-981-125-825-1
ISSN
—
e-ISSN
—
Number of pages
8
Pages from-to
250-257
Publisher name
World Scientific
Place of publication
Singapore
Event location
Rome
Event date
Jul 1, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—

Similar results(10)