A precessing disk in OJ 287?

被引：155

作者：

Katz, JI ^{[1
]}

机构：

[1] WASHINGTON UNIV,MCDONNELL CTR SPACE SCI,ST LOUIS,MO 63130

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 478卷 / 02期

关键词：

accretion; accretion disks; BL Lacertae objects; individual; (OJ; 287); galaxies; active;

D O I：

10.1086/303811

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Sillanpaa et al. have demonstrated that the active galactic nucleus OJ 287 has intensity peaks that recur within a period of about 12 yr. I suggest that this is the result of the sweeping of a precessing relativistic beam across our line of sight. In analogy to Hercules X-1 and SS 433, precession is attributed to the torque exerted by a companion mass on an accretion disk. Secondary maxima observed 1.2 yr after two of these peaks may be evidence of nodding motion.

引用

页码：527 / 529

页数：3

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