An XMM-Newton observation of the Narrow Line Seyfert 1 Galaxy, Markarian 896

Details An XMM-Newton observation of the Narrow Line Seyfert 1 Galaxy, Markarian 896 An XMM-Newton observation of the Narrow Line Seyfert 1 Galaxy, Markarian 896

2003-01-09

arxiv.org/abs/astro-ph/0301152v1

Mon.Not.Roy.Astron.Soc. 340 (2003) 1052

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures, accepted by MNRAS

Scientific paper

10.1046/j.1365-8711.2003.06403.x

XMM-Newton observations of the NLS1 Markarian 896 are presented. Over the 2-10 keV band, an iron emission line, close to 6.4 keV, is seen. The line is just resolved and has an equivalent width of ~170 eV. The broad-band spectrum is well modelled by a power law slope of gamma ~ 2.03, together with two blackbody components to fit the soft X-ray excess. Using a more physical two-temperature Comptonisation model, a good fit is obtained for an input photon distribution of kT ~ 60eV and Comptonising electron temperatures of ~0.3 and 200 keV. The soft excess cannot be explained purely through the reprocessing of a hard X-ray continuum by an ionised disc reflector.

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