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28 March 2024
 
  » arxiv » astro-ph/0010485

 Article overview


The circumnuclear X-ray reflectors in NGC 1068 and the Circinus Galaxy
Stefano Bianchi ; Giorgio Matt ; Kazushi Iwasawa ;
Date 24 Oct 2000
Journal Mon.Not.Roy.Astron.Soc. 322 (2001) 669
Subject astro-ph
AffiliationDip. Fisica, Univ. Roma Tre), Kazushi Iwasawa (IoA, Cambridge
AbstractThe ASCA and BeppoSAX spectra of the Circinus Galaxy and NGC 1068 are analysed and compared with photoionization models based on cloudy. In the case of Circinus, a single, mildly ionized reflector can account for the line spectrum, while in NGC 1068 at least three different reflectors (with different ionization states) are needed. We suggest that the reflector in Circinus, and the low ionized one in NGC1068 are the inner and visible part of the material responsible for the X-ray absorption. With this assumption, we estimate for the inner radius of the absorber a value of 0.2 pc for Circinus and of a few parsecs for NGC 1068.
Source arXiv, astro-ph/0010485
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