Investigating the X-ray polarization of lamp-post coronae in BHXRBs

0560027 - ASÚ 2023 RIV GB eng J - Článek v odborném periodiku
Zhang, W. - Dovčiak, Michal - Bursa, Michal - Karas, Vladimír - Matt, G. - Ursini, F.
Investigating the X-ray polarization of lamp-post coronae in BHXRBs.
Monthly Notices of the Royal Astronomical Society. Roč. 515, č. 2 (2022), s. 2882-2889. ISSN 0035-8711. E-ISSN 1365-2966
Grant CEP: GA ČR(CZ) GX21-06825X; GA MŠMT(CZ) 8JCH1080
Grant ostatní: Ministerstvo školství, mládeže a tělovýchovy - GA MŠk(CZ) LM2018140
Institucionální podpora: RVO:67985815
Klíčová slova: polarization * X-rays * high energy astrophysical phenomena
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 4.8, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1093/mnras/stac1937

High-sensitivity X-ray polarimetric observations of black hole X-ray binaries, which will soon become available with the launches of space-borne X-ray observatories with sensitive X-ray polarimeters, will be able to put independent constraints on the black hole as well as the accretion flow, and possibly break degeneracies that cannot be resolved by spectral/timing observations alone. In this work, we perform a series of general relativistic Monte Carlo radiative transfer simulations to study the expected polarization properties of X-ray radiation emerging from lamp-post coronae in black hole X-ray binaries. We find that the polarization degree of the coronal emission of black hole X-ray binaries is sensitive to the spin of the black hole, the height of the corona, and the dynamics of the corona.
Trvalý link: https://hdl.handle.net/11104/0333338