Poster Presentation

Broadband X-Ray Spectral Analysis of Seyfert 1 Galaxies with Clumpy Torus Model

Author(s): Shoji Ogawa (Kyoto Univ.), Yoshihiro Ueda (Kyoto Univ.), Satoshi Yamada (Kyoto Univ.), Atsushi Tanimoto (Kyoto Univ.), Hirokazu Odaka (Univ. of Tokyo), Toshihiro Kawaguchi (Onomichi City Univ.), Yasushi Fukazawa (Hiroshima Univ.)

Presenter: Shoji Ogawa (Kyoto University)

We report the first results applying the X-ray clumpy torus model (XCLUMPY: Tanimoto et al. 2019) to type-1 active galactic nuclei (AGNs). First, we investigate dependences of predicted iron-K equivalent width on torus parameters: hydrogen column density, torus angular width, and inclination angle. The intensity of the narrow iron-K fluorescence line can be used to infer the torus geometry, even in type-1 AGNs, which show no line-of-sight absorption. Then, we apply our model to the broadband X-ray data of two Seyfert 1 galaxies (IC 4329A and NGC 7469), and constrain their torus parameters by decoupling multiple spectral components. Finally, we compare the results with those obtained from infrared observations.