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BISAC SCI004000
BISAC SCI005000
Methods for analyzing the light curves of the non-thermal radiation in active galactic nuclei
Section:
Astronomical Instruments and Methods
et al.
M. Khabibullina
Special Astrophysical Observatory of the Russian Academy of Sciences
V. Stolyarov
Special Astrophysical Observatory of the Russian Academy of Sciences
Special Astrophysical Observatory of the Russian Academy of Sciences
A. Mikhailov
SAO RAS
D. Kudryavtsev
Special Astrophysical Observatory of the Russian Academy of Sciences
V. Vlasyuk
SAO RAS
Yu. Sotnikova
Special Astrophysical Observatory of the Russian Academy of Sciences
T. Mufakharov
Special Astrophysical Observatory of the Russian Academy of Sciences
Special Astrophysical Observatory of the Russian Academy of Sciences
D. Morozova
Saint Petersburg State University
Abstract:
We present different methods for analyzing the light curves of active galactic nuclei (AGNs). Based on the example of AGN multiwavelength measurements, features of the following methods are considered: (1) structure functions (SFs)—to search for variability timescales; (2) discrete correlation functions (DCFs)—to search for connections between processes; (3) the Lomb–Scargle (L–S) periodogram—to search for periodicity. We analyze advantages and disadvantages of the methods and discuss their constraints and interpretation.
We present different methods for analyzing the light curves of active galactic nuclei (AGNs). Based on the example of AGN multiwavelength measurements, features of the following methods are considered: (1) structure functions (SFs)—to search for variability timescales; (2) discrete correlation functions (DCFs)—to search for connections between processes; (3) the Lomb–Scargle (L–S) periodogram—to search for periodicity. We analyze advantages and disadvantages of the methods and discuss their constraints and interpretation.
Keywords:
methods: data analysis, statistical, observational; radiation mechanisms: non-thermal
methods: data analysis, statistical, observational; radiation mechanisms: non-thermal
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