An XMM-Newton observation of the narrow-line Seyfert 1 galaxy Markarian 896
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- April 2003
- DOI:
- 10.1046/j.1365-8711.2003.06403.x
- arXiv:
- arXiv:astro-ph/0301152
- Bibcode:
- 2003MNRAS.340.1052P
- Keywords:
-
- galaxies: active;
- galaxies: individual: Markarian 896;
- galaxies: Seyfert;
- X-rays: galaxies;
- Astrophysics
- E-Print:
- 6 pages, 4 figures, accepted by MNRAS