The characteristic periodicity analysis of the radio flux variability of quasar PKS 1510-089  

作　　者：ZHANG HaoJing ZHAO Gang ZHANG Xiong DONG FuTong XIE ZhaoHua YI TingFeng ZHENG YongGang BAO YuYing 

机构地区：[1]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China [2]Graduate Univensity of Chinese Academy of Sciences,Beijing 100049,China [3]Department of Physics,Yunnan Normal University,Kunming 650092,China [4]Department of Physics,Yunnan University,Kunming 650091,China [5]Department of Physics,Yuxi Normal University,Yuxi 653100,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2009年第9期1442-1448,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10821061, 10763002, and 10663002);the National Basic Research Program of China (Grant No. 2007CB815103);the Natural Science Foundation of Yunnan Province (Grant No. 2008CC011)

摘　　要：A wavelet analysis method is introduced to study the possible periods of PKS 1510-089 in radio bands. By compiling the radio light curve of PKS 1510-089 at frequencies of 22 and 37 GHz from 1990 to 2005, and using the wavelet analysis method, the evidence of quasi-periodic activity in PKS 1510-089 was obtained. The results indicate that: (1) There are two stable outburst periods of T1=(1.80±0.06) yr and T2= (0.90±0.07) yr presenting in the isoplethal map of PKS 1510-089 at the radio band 37 GHz; (2) there is an outburst period of T1=(1.80±0.06) yr presenting at the radio band 22 GHz; (3) by the continuum of the isograms map, we find the primary period of PKS 1510-089 is T1=(1.80±0.06) yr, and the period of T2= (0.90±0.07) yr may be the half period. The above results are consistent with the reports of Xie et al. (2004, 2005, 2008), Wu et al. (2005) and Liu & Fan (2007), using the other methods. We can expect that the next burst will be in January 2011.A wavelet analysis method is introduced to study the possible periods of PKS 1510-089 in radio bands. By compiling the radio light curve of PKS 1510-089 at frequencies of 22 and 37 GHz from 1990 to 2005, and using the wavelet analysis method, the evidence of quasi-periodic activity in PKS 1510-089 was obtained. The results indicate that: (1) There are two stable outburst periods of T 1=(1.80±0.06) yr and T 2= (0.90±0.07) yr presenting in the isoplethal map of PKS 1510-089 at the radio band 37 GHz; (2) there is an outburst period of T 1=(1.80±0.06) yr presenting at the radio band 22 GHz; (3) by the continuum of the isograms map, we find the primary period of PKS 1510-089 is T 1=(1.80±0.06) yr, and the period of T 2= (0.90±0.07) yr may be the half period. The above results are consistent with the reports of Xie et al. (2004, 2005, 2008), Wu et al. (2005) and Liu & Fan (2007), using the other methods. We can expect that the next burst will be in January 2011.

关 键 词：QUASAR object individual (PKS 1510-089) RADIO band’s PERIODICITY ANALYSIS wavelet ANALYSIS RADIO FLUX black hole mass 

分 类 号：P158[天文地球—天文学]