Blazar nuclei in radio-loud narrow-line Seyfert 1?

被引：32

作者：

Foschini, L. ^{[1
]}

Maraschi, L. ^{[2
]}

Tavecchio, F. ^{[2
]}

Ghisellini, G. ^{[2
]}

Gliozzi, M. ^{[3
]}

Sambruna, R. M. ^{[4
]}

机构：

[1] INAF IASF Bologna, I-40129 Bologna, Italy

[2] INAF Osservatorio Astron Brera, I-20121 Milan, Italy

[3] George Mason Univ, Fairfax, VA 22030 USA

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

ADVANCES IN SPACE RESEARCH | 2009年 / 43卷 / 06期

关键词：

Radio-loud narrow-line Seyfert 1; Blazars; Relativistic jets; X-RAY-EMISSION; ACTIVE GALACTIC NUCLEI; SKY SURVEY; GALAXIES; VARIABILITY; PKS-0558-504; SEQUENCE; QUASARS; SAMPLE; AGNS;

D O I：

10.1016/j.asr.2008.12.021

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

It has been suggested that some radio-loud narrow-line Seyfert 1 contain relativistic jets, on the basis of their flat-spectrum radio nuclei and studies on variability. We present preliminary results of ail ongoing investigation of the X-ray and multiwavelength properties of 5 radio-loud NLS1 based oil archival data front Swift and XMM-Newton. Some sources present interesting characteristics, very uncharacteristic For a radio-quiet narrow-line Seyfert 1, such as very hard X-ray spectra, and correlated optical and ultraviolet variability, However, none of the studied sources show conclusive evidence for relativistic jets. gamma-Ray observations with Fermi are strongly recommended to definitely decide oil the presence or not of relativistic jets. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：889 / 894

页数：6

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