Other
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hrxs.confe..25l&link_type=abstract
"High Resolution X-ray Spectroscopy: Towards IXO, Proceedings of the international workshop held at the Mullard Space Science La
Other
Scientific paper
I will present the observation of the Seyfert 1 Galaxy Mrk 335 performed by XMM-Newton during an unusually low flux state that unveiled an emission line-rich spectrum in the soft X-ray. Line ratio diagnostics from H-like and He-like ions indicate that the emission lines arise in X-ray photoionised plasma. The physical properties of the line emitting material were derived by comparing the observed line intensities to the simulations performed by the CLOUDY photoionisation code. Different solutions for the electron density and column density of the gas are consistent with the spectral diagnostics, preventing us from uniquely determining the properties of the plasma. However, the location(s) of the X-ray photoionised gas can be constrained to within the inner edge of the Broad Line Region. I will briefly present other Seyfert 1 sources where X-ray photoionised emission lines are possibly located in the Broad Line Region and I will review the implication of these findings in a broader context.
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