Evidence for accretion disks in highly polarized quasars

Details Evidence for accretion disks in highly polarized quasars Evidence for accretion disks in highly polarized quasars

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326l..39s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 326, March 15, 1988, p. L39-L44. Research supported

Other

41

Accretion Disks, Linear Polarization, Polarized Light, Quasars, Synchrotron Radiation, Ubv Spectra, Astronomical Photometry, Infrared Spectra, Luminosity, Ultraviolet Spectra

Scientific paper

The results of a search for thermal components in 11 highly polarized quasars (HPQs) using UVBRI polarimetry and photometry are reported. The 2000-2500 A luminosities of the thermal components are calculated and the estimated luminosities of the broad-line region (BLR) are given in the same wavelength for comparison. The observed optical continua are modeled as a combination of polarized synchrotron emission, unpolarized emission from the BLR, and an unpolarized flat spectral component that may be optically thick thermal emission from an accretion disk. Evidence for thermal emission components is found in three HPQs: PKS 0420-014, B2 1156+295, and 3C 454.3, with marginal evidence in another two, PKS 1510-089 and PKS 2345-167.

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