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

被引：0

作者：

Guainazzi, M ^{[1
]}

Comastri, A ^{[1
]}

Stirpe, G ^{[1
]}

Brandt, WN ^{[1
]}

Parmar, A ^{[1
]}

Puchnarewicz, EM ^{[1
]}

机构：

[1] Beppo SAX Sci Data Ctr, I-00131 Rome, Italy

来源：

ACTIVE X-RAY SKY: RESULTS FROM BEPPOSAX AND RXTE | 1998年

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 Is and no iron line is significantly detected. Even more intriguingly, a 1992 ROSAT pointed observation suggests a dramatic (Delta Gamma similar or equal to 1) change in the spectral shape for E less than or similar to 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.

引用

页码：533 / 536

页数：4

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