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Measuring the cosmic X-ray background accurately
被引:4
作者:
Li, Hancheng
[1
]
Walter, Roland
[1
]
Produit, Nicolas
[1
]
Hubert, Fiona
[2
]
机构:
[1] Univ Geneva, Dept Astron, 16 Chemin Ecogia, CH-1290 Versoix, Switzerland
[2] EPF Ecole Ingn E S, 55 Ave President Wilson, FR-94230 Cachan, France
基金:
瑞士国家科学基金会;
关键词:
Instrumentation center dot Detectors;
X-rays center dot Diffuse background;
ACTIVE GALACTIC NUCLEUS;
LUMINOSITY FUNCTION;
ABSORBED AGNS;
CHANDRA;
SPECTRUM;
EVOLUTION;
SCINTILLATORS;
POPULATION;
INTENSITY;
EMISSION;
D O I:
10.1007/s10686-023-09896-7
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
Synthesis Synthesis models of the diffuse Cosmic X-ray Background (CXB) suggest that it can be resolved into discrete sources, primarily Active Galactic Nuclei (AGNs). Measuring the CXB accurately offers a unique probe to study the AGN population in the nearby Universe. Current hard X-ray instruments suffer from the time-dependent background and cross-calibration issues. As a result, their measurements of the CXB normalization have an uncertainty of the order of similar to 15%. In this paper, we present the concept and simulated performances of a CXB detector, which could be operated on different platforms. With a 16-Unit CubeSat mission running for more than two years in space, such a detector could measure the CXB normalization with similar to 1% uncertainty.
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页码:141 / 170
页数:30
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