Polarization of radiation from AGN accretion disks

Details Polarization of radiation from AGN accretion disks Polarization of radiation from AGN accretion disks

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..881c&link_type=abstract

(Rice University and University of Texas, Texas-Mexico Conference on Astrophysics: Plasmas in Astrophysics, 3rd, Rice University

Astronomy and Astrophysics

Astronomy

Accretion Disks, Active Galactic Nuclei, Black Holes (Astronomy), Optical Polarization, Quasars, Electron Scattering, Thermal Radiation

Scientific paper

A popular candidate for the Blue Bump often seen in AGN spectra is thermal radiation from an accretion disk. In models for disks surrounding supermassive black holes, such radiation would be emitted by a region of the disk dominated by electron-scattering opacity. Polarization predicted by standard, smooth, thin disk models disagrees with observations. The introduction of local surface roughness brings the predicted polarization more closely into line with observations. Further, the predicted polarization of radiation escaping from a thick radiation torus agrees well with observed values.

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