Details

Autor(en) / Beteiligte

• Pounds, K. A.
• Page, K. L.

Titel

An XMM-Newton observation of Mkn 3 — a Seyfert galaxy just over the edge

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2005-07, Vol.360 (3), p.1123-1131

Ort / Verlag

Oxford, UK: Blackwell Science Ltd

Erscheinungsjahr

2005

Link zum Volltext

Quelle

Wiley Online Library

Beschreibungen/Notizen

• A 100-ks XMM-Newton observation of the nearby Seyfert 2 galaxy Mkn 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, photoionized and photoexcited by the intrinsically strong X-ray continuum. Measured blueshifts in the strong Fe Kα and O vii and O viii emission lines are discussed in terms of the properties of the putative molecular torus and ionized outflow.