出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The AGN NGC 2110 presents a peculiar case among the Seyfert 2 galaxies, as it displays also features of radio-loud objects and is classified as FR-I radio galaxy. Here we analyse simultaneous INTEGRAL and Swift data taken in 2008 and 2009. We reconstruct the spectral energy distribution in order to provide further insight. The combined X-ray spectrum is well represented by an absorbed cut-off power law model plus soft excess. Combining all available data, the spectrum appears flat (G = 1.25±0.04) with the high-energy cut-off being at 82±9keV. The absorption is moderate (NH = 4×1022 cm−2), the iron Ka line is weak (EW = 114eV), and no reflection component is detected in the INTEGRAL spectrum. The data indicate that the X-ray spectrum is moderately variable both in flux and spectral shape. The 2008 spectrum is slightly steeper (G=1.5, EC =90keV) with the source being brighter, and flatter in 2009 (G=1.4, EC =120keV) in the lower flux state. The spectral energy distribution gives a bolometric luminosity of Lbol ≃ 2×1044 ergs−1. NGC 2110 appears to be a borderline object between radio loud narrow line Seyfert 1 and radio quiet Seyfert 2. Its spectral energy distribution might indeed be dominated by non-thermal emission arising from the jet.
