
%0 Journal Article
%A Salvi, Nikita 
%A Page, Mat J. 
%A Stevens, Jason A. 
%A Mason, Keith O. 
%A Wu, Kinwah 
%T Multi-wavelength Behaviour of III Zw2
%J Publications of the Astronomical Society of Australia
%D 2002/06/28
%V 19
%N 1
%P 73-76
%K accretion, accretion disks &#8212; galaxies: individual (III Zw2) &#8212; galaxies: active &#8212; galaxies: Seyfert &#8212; radio continumm: galaxies &#8212; X-rays: galaxies
%R https://doi.org/10.1071/AS01093
%U https://www.publish.csiro.au/paper/AS01093 
%X III Zw2 was observed with XMM-Newton in July 2000. Its X-ray spectrum can be described by a power law of photon index &Gamma;&#x2248;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 X-rays. We interpret the radio to optical emission as synchrotron radiation, self-absorbed in the radio/millimetre 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. 
