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Multi-wavelength Behaviour of III Zw2

Wu, Kinwah; Mason, Keith O.; Salvi, Nikita +2 more

III Zw2 was observed with XMM-Newton in July 2000. Its X-ray spectrum can be described by a power law of photon index Γ~1.7 with a Gaussian line at 6.7KeV. 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 ra…