The continuum energy distributions of four PG quasars and their infrared radiative mechanism.

Details The continuum energy distributions of four PG quasars and their infrared radiative mechanism. The continuum energy distributions of four PG quasars and their infrared radiative mechanism.

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996acaps..16..231w&link_type=abstract

Acta Astrophys. Sin., Vol. 16, No. 3, p. 231 - 238

Astronomy and Astrophysics

Astrophysics

Quasars: Energy Distribution, Quasars: Continuum Radiation, Quasars: Radiation Mechanisms

Scientific paper

The continua of four PH quasars from X-ray regions through the far-infrared are discussed. The spectral energy distributions show a variety of shapes which can be explained by combining five components in varying proportions. Nonthermal emission and thermal dust emission both contribute substantially to the infrared bump. For all four quasars discussed, the nonthermal emission, spanning at least five decades of frequencies, is found by the authors' model to have a power-law index near unity. The nonthermal process is found to have produced the uniform-energy distribution status of νfν const. The contributions from the host galaxy and starburst region near the nuclei are negligible in the infrared for luminous quasars.

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