Two-dimensional correlation analysis of periodicity in active galactic nuclei time series

The active galactic nuclei (AGN) are among the most powerful sources with an inherent, pronounced and random variation of brightness. The randomness of their time series is so subtle as to blur the border between aperiodic fluctuations and noisy oscillations. This poses challenges to analysing of su...

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Bibliographic Details
Main Authors: Kovačević Andjelka B., Popović Luka Č., Ilić Dragana
Format: Article
Language:English
Published: De Gruyter 2020-07-01
Series:Open Astronomy
Subjects:
Online Access:https://doi.org/10.1515/astro-2020-0007