活动星系核红移分布中的准周期峰  

QUASI-PERIODICAL PEAKS IN THE REDSHIFT DISTRIBUTION OF ACTIVE GALAXIES

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：《天文学报》1994年第3期274-280,共7页Acta Astronomica Sinica

基　　金：国家自然科学基金

摘　　要：本文作者在活动星系核红移分布（０＜ｚ≤０．２）中发现了准周期性的峰。这些峰分布于ｚ≈０．０３０，０．０６０，０．０９０，０．１２０处（其中ｚ＝０．０６０处的峰是１９６８年Ｂｕｒｂｉｄｇｅ发现的并于１９９０年证实）。红移数据的功率谱表明。这些峰值的准周期为△ｚ＝０．０２７±０．００２。两个相邻的峰所表征的空间距离为８１±６ｈ^（－１）Ｍｐｃ。这可能是宇宙大尺度结构中各个单元的特征尺度（Ｈ_０＝１００ｈ^（－１）Ｍｐｃ^（－１）ｍｓ^（－１）。The quasi-periodical peaks are found in the redshift distribution(0<z≤0.2) of 1073 Active Galaxies.Peaks appear at z≌0.032,0.060,0.087,0.116(The peak at 0.060 was found by Burbidge in 1968 and confirmed in 1990).Direct power spectrum analyses to redshift data shou, that the quasiperiod of the peaks is △z≌0.027±0.002.The spatial distance indicated by neighboring two peaks is 81±6h￣(-1) Mpc,which possibly is the'cell' characteristic size of the large scale structure of the universe (H =100h￣(-1) kms￣(-1)Mpc￣(-1)).

关 键 词：活动星系核 红移分布 周期性 

分 类 号：P157.6[天文地球—天文学]