The missing x-ray background

被引：9

作者：

Comastri, A ^{[1
]}

机构：

[1] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy

来源：

MULTIWAVELENGTH AGN SURVEYS | 2004年

关键词：

D O I：

10.1142/9789812702432_0079

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The fraction of the hard X-ray background (XRB) resolved into individual sources by the deep Chandra and XMM-Newton surveys strongly depends on the adopted energy range and decreases with increasing energy. As a consequence the nature of the sources of the even harder (> 10 keV) XRB remains observationally poorly constrained. I will briefly discuss the need for X-ray observations above 10 keV.

引用

页码：323 / 328

页数：6

共 22 条

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