SELF-ABSORBED ACTIVE GALACTIC NUCLEI AND THE COSMIC X-RAY-BACKGROUND

被引：33

作者：

MADAU, P

GHISELLINI, G

FABIAN, AC

机构：

[1] OSSERV ASTRON TORINO,I-10025 PINO TORINESE,ITALY

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

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 410卷 / 01期

关键词：

DIFFUSE RADIATION; GALAXIES; SEYFERT; QUASARS; GENERAL; X-RAYS;

D O I：

10.1086/186866

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The hard X-ray properties of heavily obscured active galactic nuclei (AGNs) are investigated. We consider the reprocessing of X-rays by photoelectric absorption and Compton downscattering in cold material, and compute the transmitted spectra expected for active galaxies. We discuss the recent OSSE observations in terms of the unified Seyfert scheme, and show that a population of heavily self-absorbed AGNs with an exponential cutoff at high energies may plausibly explain the cosmic X-ray background.

引用

页码：L7 / &

共 37 条

[1] SPECTROPOLARIMETRY AND THE NATURE OF NGC-1068 [J].