期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 475, 期 2, 页码 2051-2066出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stx3137
关键词
methods: data analysis; galaxies: active; galaxies: nuclei; quasars: supermassive black holes; galaxies: Seyfert
资金
- Alexander von Humboldt Foundation
- Ministry of Education, Science and Technological Development of Serbia [176001, 176002]
- INTAS [N96-0328]
- RFBR [N9702-17625, N00-02-16272, N03-02-17123, 06-02-16843, N09-0201136, 12-02-00857a, 12-02-01237a, N15-02-02101]
- Erasmus Mundus Master Programme, AstroMundus
New combined data of five well-known type 1 active galactic nuclei (AGNs) are probed with a novel hybrid method in a search for oscillatory behaviour. Additional analysis of artificial light curves obtained from the coupled oscillatory models gives confirmation for detected periods that could have a physical background. We find periodic variations in the long-term light curves of 3C 390.3, NGC 4151 and NGC 5548, and E1821 + 643, with correlation coefficients larger than 0.6. We show that the oscillatory patterns of two binary black hole candidates, NGC 5548 and E1821 + 643, correspond to qualitatively different dynamical regimes of chaos and stability, respectively. We demonstrate that the absence of oscillatory patterns in Arp 102B could be the result of a weak coupling between oscillatory mechanisms. This is the first good evidence that 3C 390.3 and Arp 102B, categorized as double-peaked Balmer line objects, have qualitative different dynamics. Our analysis shows a novelty in the oscillatory dynamical patterns of the light curves of these type 1 AGNs.
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