类星体红移分布的高频周期  

The High Frequency Periods in the Redshift Distribution of Quasars

作　　者：韩金林[1] 何香涛[1] 

机构地区：[1]中国科学院北京天文台,北京师范大学天文系

出　　处：《天体物理学报》1994年第1期32-40,共9页

基　　金：国家自然科学基金

摘　　要：本文对Ｖｅｒｏｎ－Ｃｅｔｔｙ和Ｖｅｒｏｎ类星体表中３１９７颗红移精度为０．００１的类星体做了红移分布的周期性分析。结果表明：类星体红移值在几个方向上存在高频波动的周期性分布，且置信度水平较高。根据我们的分析，这种周期性不可能完全是由于选择效应引起的。因此，类星体在大尺度上的分布很可能具有大约５０Ｍｐｃ的周期涨落。The Periodicity in the redshift distribution of quasars is analysed.The sample used is 3179 quasars with redshift accuracy 0.001 extracted from in the AGN catalog compiled by Veron-Cetty and Veron(1989).A few high frequency periods are found in different sky regions with confidence levels higher than 90%.Such a high frequency period is not due to the selection effect in observations according to our analyses.The results show that quasars distribute possibly in the universe with a large scale periodic fluctuation of a characteristic scale about 50h-1 Mpc.

关 键 词：红移 周期性 

分 类 号：P158[天文地球—天文学]