1H0419-577: A two-state seyfert galaxy?

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

doi:10.1016/S0920-5632(98)00278-3

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 (ΔΓ ≃ 1) change in the spectral shape for Ε ≲ 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.

Original language	English (US)
Pages (from-to)	533-536
Number of pages	4
Journal	Nuclear Physics B - Proceedings Supplements
Volume	69
Issue number	1-3
DOIs	https://doi.org/10.1016/S0920-5632(98)00278-3
State	Published - Jan 1999

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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title = "1H0419-577: A two-state seyfert galaxy?",

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 (ΔΓ ≃ 1) change in the spectral shape for Ε ≲ 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.",

author = "M. Guainazzi and A. Comastri and G. Stirpe and Brandt, {W. N.} and A. Parmar and Puchnarewicz, {E. M.}",

year = "1999",

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TY - JOUR

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T2 - A two-state seyfert galaxy?

AU - Guainazzi, M.

AU - Comastri, A.

AU - Stirpe, G.

AU - Brandt, W. N.

AU - Parmar, A.

AU - Puchnarewicz, E. M.

PY - 1999/1

Y1 - 1999/1

N2 - 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 (ΔΓ ≃ 1) change in the spectral shape for Ε ≲ 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.

AB - 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 (ΔΓ ≃ 1) change in the spectral shape for Ε ≲ 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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JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

IS - 1-3

ER -

1H0419-577: A two-state seyfert galaxy?

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