Auto- and cross-correlation analysis of the QSOs radio wave intensity

17th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Demin, S.A.^1,2 ; Panischev, O.Yu.^1,2 ; Nefedyev, Yu.A.^1,2

Kazan Federal University, Institute of Physics, Kazan

420008, Russia^1

Kazan Federal University, Engelhardt Astronomical Observatory, Zelenodolski region, St. Observatory, 422526, Russia^2

关键词: Astrophysical objects;    Asymmetrical structures;    Cross-correlation analysis;    Flicker-noise spectroscopies;    Non-stationary effects;    Phase synchronization;    Quasi-stellar objects;    Radio wave intensity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/661/1/012003/pdf
DOI  :  10.1088/1742-6596/661/1/012003

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We discuss here the Flicker-Noise Spectroscopy approach to studying astrophysical systems, for example the radio wave intensity of quasi-stellar object (QSO) 1641+399 and BL Lacertae (BL Lac) 0215+015 in different frequency ranges. The presented method allows to parameterize the study dynamics using a short set of characteristics. The considering sources have a significant differences in manifesting the non-stationary effects, dynamical intermittency and synchronization. The radio wave intensity dynamics of the BL Lac 0215+015 is characterized by well-defined set of natural frequencies, persistent behavior with low effects of non-stationarity and high level of frequency-phase synchronization. For dynamics of the QSO 1641+399 reverse occurs including the asymmetrical structure of cross-correlator. Our findings show that using the flicker-noise spectroscopy approach to studying astrophysical objects allows to carry out the more detail analysis of their behavior and evolution.