High resolution spectroscopy of Seyfert warm absorbers with XMM-Newton
Kaastra, J. S.; Behar, E.; Sako, M.; Page, M. J.; Branduardi-Raymont, G.; Steenbrugge, K. C.; Kahn, S. M.; Blustin, A. J.
United Kingdom, Israel, Netherlands, United States
Abstract
We present results from the analysis of an XMM-Newton observation of the Seyfert 1 galaxy NGC 7469, the first high resolution X-ray spectrum of this source. The Reflection Grating Spectrometer (RGS) spectrum has several narrow absorption and emission lines of O, N, C and Ne, originating from gas at a range of ionisation parameters, from log ξ∼1.6 to log ξ∼-2 (where ξ has the units erg cm s -1). We demonstrate that the ionisation state of the warm emitter is consistent with that of the high-ionisation phase of the warm absorber, and compare the warm absorber in this object with those in other sources.