GINGA OBSERVATIONS OF SEYFERT-GALAXIES

被引：35

作者：

AWAKI, H ^{[1
]}

KOYAMA, K ^{[1
]}

机构：

[1] KYOTO UNIV,DEPT PHYS,SAKYO KU,KYOTO 606,JAPAN

来源：

SPACE ASTRONOMY | 1993年 / 13卷 / 12期

关键词：

D O I：

10.1016/0273-1177(93)90114-Q

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

We observed twenty-eight Seyfert 2 galaxies with the Japanese X-ray satellite, Ginga, and found Seyfert 2 galaxies, in general, have the X-ray spectral characteristics of obscured Seyfert 1 nuclei. This result agrees with the predictions from Unified Seyfert model proposed by Antonucci and Miller/1/. However, among the observed Seyfert 2 galaxies, there are a few galaxies with no evidence of an obscuration, contrary to the general predictions of the unified model. We note that type 2 AGN will contribute to the Cosmic Diffuse X-ray Background, if the unified Seyfert model can be extended to the far distant AGN such as quasars.

引用

页码：221 / 230

页数：10

共 31 条

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