Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales
Pandey,Ashwani1,2; Gupta,Alok C.1; Kurtanidze,Sofia O.3,4,5; Wiita,Paul J.6; Damljanovic,G.7; Bachev,R.8; Zhang,Jin9; Kurtanidze,O. M.3,4,10,11; Darriba,A.12,13; Chigladze,R. A.3,5; Latev,G.8; Nikolashvili,M. G.3,4; Peneva,S.8; Semkov,E.8; Strigachev,A.8; Tiwari,S. N.2; Vince,O.7
Source PublicationThe Astrophysical Journal
AbstractAbstract We report the results of our optical (VRI) photometric observations of the TeV blazar 1ES 0806+524 on 153 nights during 2011–2019 using seven optical telescopes in Europe and Asia. We investigated the variability of the blazar on intraday as well as on long-term timescales. We examined 18 intraday light curves for flux and color variations using the most reliable power-enhanced F-test and the nested ANOVA test. Only on one night was a small, but significant, variation found, in both V-band and R-band light curves. The V?R color index was constant on every one of those nights. Flux density changes of around 80% were seen over the course of these eight years in multiple bands. We found a weighted mean optical spectral index of 0.639?±?0.002 during our monitoring period by fitting a power law ( ) in 23 optical (VRI) spectral energy distributions of 1ES 0806+524. We discuss different possible mechanisms responsible for blazar variability on diverse timescales.
KeywordActive galactic nuclei Blazars Observational astronomy CCD photometry Radio loud quasars Active galaxies Optical observation Relativistic jets Optical telescopes BL Lacertae objects
WOS IDIOP:0004-637X-890-1-ab698e
PublisherThe American Astronomical Society
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Document Type期刊论文
Affiliation1.Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263002, India;
2.Department of Physics, DDU Gorakhpur University, Gorakhpur 273009, India
3.Abastumani Observatory, Mt. Kanobili, 0301 Abastumani, Georgia
4.Zentrum für Astronomie der Universit?t Heidelberg, Landessternwarte, K?nigstuhl 12, D-69117 Heidelberg, Germany
5.Samtskhe-Javakheti State University, Rustaveli Str. 113, 0080 Akhaltsikhe, Georgia
6.Department of Physics, The College of New Jersey, 2000 Pennington Rd., Ewing, NJ 08628-0718, USA
7.Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia
8.Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72 Tsarigradsko Shosse Boulevard, 1784 Sofia, Bulgaria
9.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
10.Engelhardt Astronomical Observatory, Kazan Federal University, Tatarstan, Russia
11.Center for Astrophysics, Guangzhou University, Guangzhou 510006, People’s Republic of China
12.American Association of Variable Star Observers (AAVSO), 49 Bay State Road, Cambridge, MA 02138, USA
13.Group M1, Centro Astronómico de Avila, Madrid, Spain
Recommended Citation
GB/T 7714
Pandey,Ashwani,Gupta,Alok C.,Kurtanidze,Sofia O.,et al. Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales[J]. The Astrophysical Journal,2020,890(1).
APA Pandey,Ashwani.,Gupta,Alok C..,Kurtanidze,Sofia O..,Wiita,Paul J..,Damljanovic,G..,...&Vince,O..(2020).Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales.The Astrophysical Journal,890(1).
MLA Pandey,Ashwani,et al."Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales".The Astrophysical Journal 890.1(2020).
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