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1H0419-577: a two-state Seyfert Galaxy?

M. Guainazzi·A. Comastri·G. Stirpe·W. N. Brandt·A. Parmar·E. M. Puchnarewicz
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Abstract

The preliminary results of the BeppoSAX observation of the radio-quiet AGN 1H0419-577 are presented. Despite its broad line optical spectrum, the intermediate X-ray spectrum (i.e. 2--10 keV) is flatter than typically observed in Seyfert 1s and no iron line is significantly detected. Even more intriguingly, a 1992 ROSAT pointed observation suggests a dramatic (~ 1) change in the spectral shape for E < 2 keV. Such behavior is briefly discussed in the framework of our current understanding of Comptonization scenarios in the nuclear regions of radio-quiet AGN.

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M. Guainazzi, A. Comastri, G. Stirpe, W. N. Brandt, A. Parmar, E. M. Puchnarewicz. 1997-12-18. 1H0419-577: a two-state Seyfert Galaxy?. https://doi.org/10.1016/s0920-5632(98)00278-3

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