THE ORIGIN OF THE COSMIC X-RAY-BACKGROUND

被引：179

作者：

SHANKS, T

GEORGANTOPOULOS, I

STEWART, GC

POUNDS, KA

BOYLE, BJ

GRIFFITHS, RE

机构：

[1] UNIV LEICESTER,DEPT PHYS & ASTRON,LEICESTER LE1 7RH,ENGLAND

[2] UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND

[3] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218

来源：

NATURE | 1991年 / 353卷 / 6342期

关键词：

D O I：

10.1038/353315a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A high-resolution image from the Rosat X-ray satellite reveals many faint discrete sources in the 0.1-2-keV energy range. Optical spectroscopy of these sources performed at the Anglo-Australian Telescope shows that many of them are quasars, and the inferred density of quasars on the sky contributes at least 30% of the cosmic X-ray background at 1 keV.

引用

页码：315 / 320

页数：6

共 34 条

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