X-RAY VARIABILITY POWER SPECTRA OF ACTIVE GALACTIC NUCLEI

被引：0
作者：
ABRAMOWICZ, MA
BAO, G
LANZA, A
ZHANG, XH
机构：
[1] INT CTR THEORET PHYS, I-34014 TRIESTE, ITALY
[2] NORDITA, DK-2100 COPENHAGEN, DENMARK
[3] ASTRON OBSERV TRIESTE, I-34131 TRIESTE, ITALY
来源：
ASTRONOMY & ASTROPHYSICS | 1991年 / 245卷 / 02期
关键词：
X-RAY OBSERVATIONS; VARIABILITY; ACTIVE GALACTIC NUCLEI;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Observed short timescale variability of the X-ray luminosity of Active Galactic Nuclei shows no characteristic frequency in the range 10(-5) Hz less-than-or-similar-to omega less-than-or-similar-to 10(-3) Hz. We show that for any kind of intrinsic variability in the innermost part of accretion disks orbiting around black holes the observed variability pattern is influenced in the short timescale range by the relativistic rotation of the disk and Doppler beaming.
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页码：454 / 456
页数：3
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