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http://hdl.handle.net/2248/7142| Title: | A search for QPOs in the lazar OJ287: preliminary results from the 2015/2016 observing campaign |
| Authors: | Zola, S Valtonen, M Bhatta, G Goyal, A Debski, B Baran, A Krzesinski, J Siwak, M Ciprini, S Gopakumar, A Jermak, H Nilsson, K Reichart, D Matsumoto, K Sadakane, K Gazeas, K Kidger, M Piirola, V Alicavus, F Baliyan, K. S Berdyugin, A Boyd, D Campas Torrent, M Campos, F Carrillo G-mez, J Caton, D. B Chavushyan, V Dalessio, J Dimitrov, D Drozdz, M Er, H Erdem, A Escartin Perez, A Fallah Ramazani, V Filippenko, A. V Garcia, F Gomez Pinilla, F Maheswar, G Haislip, J. B Harmanen, J Hudec, R Hurst, G Ivarsen, K. M Jelinek, M Joshi, A Kagitan, M Kaur, N Keel, W. C LaCluyze, A. P Lee, B. C Lindfors, E Lozano de Haro, J Moore, J. P Mugrauer, M Naves Nogues, R Neely, A. W Nelson, R. H Ogloza, W Okano, S Pandey, J. C Perri, M Pihajoki, P Poyner, G Provencal, J Pursimo, T Raj, A 29 others |
| Keywords: | Galaxies: active BL lacertae objects: individual (OJ287) Supermassive black holes |
| Issue Date: | Dec-2016 |
| Publisher: | Molecular Diversity Preservation International |
| Citation: | Galaxies, Vol. 4, No. 4, 41 |
| Abstract: | 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. |
| Description: | Open Access © Molecular Diversity Preservation International http://dx.doi.org/10.3390/galaxies4040041 |
| URI: | http://prints.iiap.res.in/handle/2248/7142 |
| ISSN: | 2075-4434 |
| Appears in Collections: | IIAP Publications |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| A Search for QPOs in the Blazar OJ287 Preliminary Results from the 20152016 Observing Campaign.pdf | 2.52 MB | Adobe PDF |  View/Open |
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