A search for QPOs in the blazar OJ287: Preliminary results from the 2015/2016 observing campaign
Galaxies, ISSN: 2075-4434, Vol: 4, Issue: 4, Page: 41
2016
- 13Citations
- 139Usage
- 8Captures
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Metrics Details
- Citations13
- Citation Indexes13
- CrossRef13
- Usage139
- Downloads134
- Abstract Views5
- Captures8
- Readers8
Article Description
We analyse the light curve in the R band of the blazar OJ287, gathered during the 2015/2016 observing season. We did a search for quasi-periodic oscillations (QPOs) using several methods over a wide range of timescales. No statistically significant periods were found in the high-frequency domain both in the ground-based data and in Kepler observations. In the longer-period domain, the Lomb-Scargle periodogram revealed several peaks above the 99% significance level. The longest one-about 95 days-corresponds to the innermost stable circular orbit (ISCO) period of the more massive black hole. The 43-day period could be an alias, or it can be attributed to accretion in the form of a two-armed spiral wave.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85041040779&origin=inward; http://dx.doi.org/10.3390/galaxies4040041; https://www.mdpi.com/2075-4434/4/4/41; https://digitalcommons.fiu.edu/physics_fac/81; https://digitalcommons.fiu.edu/cgi/viewcontent.cgi?article=1081&context=physics_fac; https://oa.tib.eu/renate/handle/123456789/9644; http://dx.doi.org/10.34657/8682; https://dx.doi.org/10.34657/8682; https://dx.doi.org/10.3390/galaxies4040041; http://www.mdpi.com/2075-4434/4/4/41; https://www.mdpi.com/2075-4434/4/4/41/pdf; https://www.mdpi.com/2075-4434/4/4/41/htm; https://oa.tib.eu/renate/bitstream/123456789/9644/1/A_search_for_QPOs.pdf
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