An X-ray view of quasars

被引：0
作者：
Singh, K. P. [1 ]
机构：
[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源：
BULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA | 2013年 / 41卷 / 02期
关键词：
quasars: general; galaxies: active; galaxies: nuclei; galaxies: Seyfert; X-rays: galaxies; X-rays: diffuse background; BROAD ABSORPTION-LINE; ACTIVE GALACTIC NUCLEI; RADIO-LOUD QUASARS; XMM-NEWTON SPECTROSCOPY; BLACK-HOLE MASS; STELLAR OBJECTS; ACCRETION-DISK; GINGA OBSERVATIONS; SEYFERT-GALAXIES; TIMING-EXPLORER;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
I present an overview of observational studies of quasars of all types, with particular emphasis on X-ray observational studies. The presentation is based on the most popularly accepted unified picture of quasars-collectively referred to as AGN (active galactic nuclei) in this review. Characteristics of X-ray spectra and X-ray variability obtained from various X-ray satellites over the last 5 decades have been presented and discussed. The contribution of AGN in understanding the cosmic X-ray background is discussed very briefly. Attempt has been made to provide up-to-date information; however, this is a vast subject and this presentation is not intended to be comprehensive.
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页码：137 / 157
页数：21
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