2003/01/09 by K. L. Page, P. T. O’Brien, P. T. O'Brien +2
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.2003.06403.x
published as Mon.Not.Roy.Astron.Soc. 340 (2003) 1052 · 6 pages, 4 figures, accepted by MNRAS
arxiv created 2003/01/09 · openalex publication_date 2003/04/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present XMM—Newton observations of the narrow-line Seyfert 1 galaxy Markarian 896.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 Γ∼ 2.03, together with two blackbody components to fit the soft X-ray excess.Using a more physical two-temperature Comptonization model, a good fit is obtained for an input photon distribution of kT∼ 60 eV and Comptonizing 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 ionized disc reflector.