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We present results of temporal and spectral analyses on four XMM-Newton EPICpn observations of IRAS 17020+4544, a narrow-line Seyfert 1 galaxy withevidence of a radio jet. Analysis of the light curves reveals that thisradio-loud source does not behave like the bulk population of its radio-quietcounterparts. A trend of spectral hardening with increased flux is found.Variability is found to increase with energy, though it decreases as thespectrum hardens. The first 40 ks of the most recent observation behaveuniquely among the epochs, exhibiting a softer spectral state than at any othertime. Possible non-stationarity at low energies is found, with no such effectpresent at higher energies, suggesting at least two distinct spectralcomponents. A reverberation signature is confirmed, with the lag-frequency,lag-energy, and covariance spectra changing significantly during the soft-stateepoch. The temporal analysis suggests a variable power-law in the presence of areflection component, thus motivating such a fit for the 0.3-10 keV EPIC pnspectra from all epochs. We find an acceptable spectral fit using thetiming-motivated parameters and report the detection of a broad Fe K emissionline, requiring an additional model component beyond the reflection spectrum.We discuss links between this source and other narrow-line Seyfert 1 sourcesthat show evidence of jet activity, finding similarities among this currentlyvery limited sample of interesting objects.

Characterising continuum variability in the radio-loud narrow-line Seyfert 1 galaxy IRAS 17020+4544