Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-04-14
Astronomy and Astrophysics
Astrophysics
16 figures; accepted for publication in MNRAS
Scientific paper
A 100ks XMM-Newton observation of the nearby Seyfert 2 galaxy Mrk 3 offers a unique opportunity to explore the complexity of its X-ray spectrum. We find the \~3-8 keV continuum to be dominated by reflection from cold matter, with fluorescent K-shell lines detected from Ni, Fe, Ca, Ar, S, Si and Mg. At higher energies an intrinsic power law continuum, with canonical Seyfert 1 photon index, is seen through a near-Compton-thick cold absorber. A soft excess below \~3 keV is found to be dominated by line emission from an outflow of `warm' gas, photo-ionised and photo-excited by the intrinsically strong X-ray continuum. Measured blue-shifts in the strong Fe K-alpha and OVII and VIII emission lines are discussed in terms of the properties of the putative molecular torus and ionised outflow.
Page Kim L.
Pounds Kenneth A.
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