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19 April 2024
 
  » arxiv » astro-ph/0010476

 Article overview


BeppoSAX observations of Narrow-Line Seyfert 1 galaxies: II. Ionized iron features in Arakelian 564
A.Comastri ; G.M. Stirpe ; C. Vignali ; W.N. Brandt ; K.M. Leighly ; F. Fiore ; M. Guainazzi ; G. Matt ; F. Nicastro ; E.M. Puchnarewicz ; A. Siemiginowska ;
Date 24 Oct 2000
Subject astro-ph
AbstractThe BeppoSAX observations of the bright Narrow-Line Seyfert 1 galaxy Ark 564 are presented along with a high quality optical spectrum taken at the 1.5m telescope at La Silla. The 0.1-10 keV X-ray spectrum is characterized by a strong soft component which is best described by blackbody-like emission with a temperature of about 160 eV. At higher energies a steep (Gamma = 2.4) power-law tail is present. There is evidence of an ionized reflector in the form of an iron line and edge. We do not find significant evidence of soft X-ray features if the spectrum is modelled with a two component continuum. The optical and X-ray spectral properties support the hypothesis of a high accretion rate onto a low mass black hole.
Source arXiv, astro-ph/0010476
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