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Multi-wavelength behaviour of IIIZw2

Nikita Salvi·Mat J. Page·Jason A. Stevens·Keith O. Mason·Kinwah Wu
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Abstract

IIIZw2 was observed with XMM-Newton in July 2000. Its X-ray spectrum can be described by a powerlaw of photon index Gamma = 1.7 with a Gaussian line at 6.7 keV. There is no significant evidence of intrinsic absorption within the source or of a soft X-ray excess. Multi-wavelength light curves over a period of 25 years show related variations from the radio to the X-rays. We interpret the radio to optical emission as synchrotron radiation, self-absorbed in the radio/millimeter region, and the X-rays as mainly due to Compton up-scattering of low-energy photons by the population of high-energy electrons that give rise to the synchrotron radiation.

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Nikita Salvi, Mat J. Page, Jason A. Stevens, Keith O. Mason, Kinwah Wu. 2002-01-31. Multi-wavelength behaviour of IIIZw2. https://doi.org/10.1071/as01093

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