Polarization from a Strongly Magnetized Accretion Disks: Asymptotic Wavelength Behaviour

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dc.creatorGnedin, Yu. N.
dc.creatorSilant'ev, N. A.
dc.creatorShternin, P. S.
dc.date2005-03-05
dc.date.accessioned2026-07-07T02:17:10Z
dc.date.available2026-07-07T02:17:10Z
dc.descriptionWe calculate the polarization of radiation from thick accretion disks with vertically averaged global magnetic field. The polarization arises as a result of the radiation scattering by free electrons in magnetized plasma of a disk. We consider as a basic effect the Faraday rotation of polarization plane along the photon propagation in a magnetized disk. The various models of optically thick accretion disk with a vertically averaged magnetic field are considered. The main goal of this paper is to obtain simple asymptotic formulae for the polarization of radiation when the Faraday rotation angle >> 1 at the Thomson optical length ~1. The results of our calculation allows us to estimate the magnetic field magnitude near the marginally stable orbit region of a black hole via the data of polarimetric observations including the expected future X-ray polarimetric observations. The wavelength dependence of polarization is strongly dependent on various models of an accretion disks and thus allows to choose a real model from the polarization data.
dc.description7 pages
dc.identifierhttps://arxiv.org/abs/astro-ph/0503121
dc.identifierhttp://arxiv.org/abs/astro-ph/0503121
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9072
dc.subjectAstrophysics
dc.titlePolarization from a Strongly Magnetized Accretion Disks: Asymptotic Wavelength Behaviour
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