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Title

Are strongly variable Seyfert 2 galaxies really AGN without a BLR?

AuthorsPanessa, Francesca ; Carrera, Francisco J. ; Bianchi, Stefano; Barcons, Xavier ; Bassani, Loredana; Corral, Amalia ; Matt, Giorgio
Keywordshttp://xmm.esac.esa.int/external/xmm_science/workshops/2008symposium
Issue Date2008
CitationX-ray Universe (2008)
AbstractStrong amplitude optical brightness variability has been found in a sample of Seyfert 2 galaxies ("Naked AGN", Hawkins 2004). The variability suggests that the nuclear source is seen directly, contradicting the complete absence of broad emission lines as simple Unified Models for AGN would predict. Alternatively the Broad Line Region might be missing in these sources. Here we present the results obtained from XMM-Newton observations coordinated quasi-simultaneously with ground-based optical spectroscopy. This have offered a priviledged window into the central engine to understand the absorption properties of these objects and relate them to their optical appearance.
DescriptionPóster presentado al Symposium the X-ray Universe, celebrado en Granada (España) del 27 al 30 de mayo de 2008.
URIhttp://hdl.handle.net/10261/170320
Appears in Collections:(IFCA) Comunicaciones congresos
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