QSO J0607-085射电波段准周期光变稳定性分析

The stability of possible periodicity at radio band in QSO J0607-085

使用了针对非均匀采样时间序列优化的小波变换方法，对密歇根大学射电天文台（UMRAO：the Univerity of Michigan Radio Astronomy Observatou）在3波段（4．8GHz，8GHz和4．5GHz）上所获得的类星体QSOJ0607—085的射电光变数据进行了分析，获取了时标约为6．51～7．34a的准周期信号，以及0．034aa^-1的周期变化率和0．03mJysHz^-1a^-1的幅度变化率．

In this paper, we adopted the wavelets for period analysis of unevenly sampled time series to the database from the university of Michigan Radio Astronomy Observatory （UMRAO） at three （4.8 GHz, 8.0 GHz, and 14.5 GHz） radio frequencies to search for possible periodicities in QSO J0607-085. Possible periodicity 6. 51 - 7.34 year with an increase of 0. 034 aa^-1 in the period and an increase of 0. 003 mJys Hz^- 1 a^- 1 in the amplitude were found.