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X-ray to Infrared Continua of optically selected quasars

Published online by Cambridge University Press:  19 July 2016

Martin Elvis
Martin Elvis*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 USA

Abstract

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X-ray to infrared continuum data for nine optically selected (PG) quasars show a form which can be simply described in terms of two components — a power law of slope ∼1 joining smoothly the 1–10 μm infrared with the 0.1–10 keV x-ray points and superimposed on this, a ‘big bump’ of optical-uv emission. The ‘big bump’ can be interpreted as thermal emission from an accretion disk. In a unique case where this ‘big bump’ extends to soft x-rays the accretion disk parameters can be constrained interestingly.

Type
II. Continuum Emission
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 73 - 77
Copyright
Copyright © Reidel 1986 

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