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
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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.
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页码：533 / 536
页数：4
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