Resolving the hard X-ray background in the Chandra Deep Field South

被引：0

作者：

Gilli, R ^{[1
]}

Giacconi, R ^{[1
]}

Tozzi, P ^{[1
]}

Rosati, P ^{[1
]}

Hasinger, G ^{[1
]}

Kewley, L ^{[1
]}

Wang, JX ^{[1
]}

Zirm, A ^{[1
]}

Mainieri, V ^{[1
]}

Borgani, S ^{[1
]}

Bergeron, J ^{[1
]}

Gilmozzi, R ^{[1
]}

Schreier, E ^{[1
]}

Koekemoer, A ^{[1
]}

Grogin, N ^{[1
]}

Nonino, M ^{[1
]}

Norman, C ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

LIGHTHOUSES OF THE UNIVERSE: THE MOST LUMINOUS CELESTIAL OBJECTS AND THEIR USE FOR COSMOLOGY | 2002年

关键词：

D O I：

10.1007/10856495_90

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The 1Msec observation of the Chandra Deep Field South (CDFS) has almost entirely resolved into single sources the hard X-ray background as measured by the HEAO-1 A2 experiment. The main population of sources, as determined by the first optical identifications, seems to be constituted by an admixture of type 1 and type 2 AGNs. We will consider the X-ray properties of the sources in the CDFS and test their consistency with the predictions from the AGN synthesis models of the X-ray background. An apparent excess of sources at z < 0.8 is found with respect to the model predictions. The X-ray background flux produced by these sources is also exceeding the predictions, suggesting that the bulk of the XRB is produced closer than expected.

引用

页码：573 / 579

页数：7

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