Relation between blue/UV continuum shape and the ratio of radio to optical emission for B3-VLA quasars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.2001.04021.x

The low frequency radio luminosity is believed to be an indicator of jet power, while the optical/UV emission is probably from accretion discs in the nuclei of steep-spectrum radio quasars. We present a correlation between the ratio of radio to optical luminosities and the continuum spectral index in blue/UV bands, which might indicate that the continuum shape in blue/UV bands is related to the ratio of jet to accretion power. The results may imply that the spectra and structure of accretion discs are probably affected by the interactions between jets and discs.

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