Characterizing Optical Variability of OJ 287 in 2016-2017
Gupta, Alok C.1,2; Gaur, Haritma1; Wiita, Paul J.3; Pandey, A.1; Kushwaha, P.4; Hu, S. M.5; Kurtanidze, O. M.6,7,8,9; Semkov, E.10,11; Damljanovic, G.12; Goyal, A.13; Uemura, M.14; Daniba, A.15,16; Chen, Xu5; Vince, O.12; Gu, M. F.2; Zhang, Z.17; Bachev, R.10,11; Chanishvili, R.6; Itoh, R.18; Kawabata, M.14; Kurtanidze, S. O.6; Nakaoka, T.14; Nikolashvili, M. G.6; Stawarz, L.13; Strigachev, A.10,11
Corresponding AuthorGupta, Alok C.(
AbstractWe report on a recent multiband optical photometric and polarimetric observational campaign of the blazar OJ 287 that was carried out during 2016 September-2017 December. We employed nine telescopes in Bulgaria, China, Georgia, Japan, Serbia, Spain, and the United States. We collected over 1800 photometric image frames in BVRI bands and over 100 polarimetric measurements over similar to 175 nights. In 11 nights with many quasi-simultaneous multiband (V, R, I) observations, we did not detect any genuine intraday variability in flux or color. On longer timescales, multiple flaring events were seen. Large changes in color with respect to time and in a color-magnitude diagram were seen, and while only a weak systematic variability trend was noticed in color with respect to time, the color-magnitude diagram shows a bluer-when-brighter trend. Large changes in the degree of polarization and substantial swings in the polarization angle were detected. The fractional Stokes parameters of the polarization showed a systematic trend with time in the beginning of these observations, followed by chaotic changes and then an apparently systematic variation at the end. These polarization changes coincide with the detection and duration of the source at very high energies as seen by VERITAS. The spectral index shows a systematic variation with time and V-band magnitude. We briefly discuss possible physical mechanisms that could explain the observed flux, color, polarization, and spectral variability.
KeywordBL Lacertae objects: general BL Lacertae objects: individual (OJ 287) techniques: photometric techniques: polarimetric
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000457852600001
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorGupta, Alok C.
Affiliation1.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263002, India
2.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, Shanghai 200030, Peoples R China
3.Coll New Jersey, Dept Phys, 2000 Pennington Rd, Ewing, NJ 08628 USA
4.Univ Sao Paulo, Dept Astron, IAG USP, BR-05508090 Sao Paulo, Brazil
5.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Inst Space Sci, Weihai 264209, Peoples R China
6.Abastumani Observ, GE-0301 Mt Kanobili, Abastumani, Rep of Georgia
7.Kazan Fed Univ, Engelhardt Astron Observ, Tatarstan, Russia
8.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China
9.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
10.Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria
11.Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria
12.Astron Observ, Volgina 7, Belgrade 11060, Serbia
13.Jagiellonian Univ, Astron Observ, Ul Orla 171, PL-30244 Krakow, Poland
14.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Kagamiyama 1-3-1, Higashihiroshima 7398526, Japan
15.Amer Assoc Variable Star Observers, 49 Bay State Rd, Cambridge, MA 02138 USA
16.Ctr Astron Avila, Grp M1, Madrid, Spain
17.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China
18.Tokyo Inst Technol, Dept Phys, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528551, Japan
Recommended Citation
GB/T 7714
Gupta, Alok C.,Gaur, Haritma,Wiita, Paul J.,et al. Characterizing Optical Variability of OJ 287 in 2016-2017[J]. ASTRONOMICAL JOURNAL,2019,157(3):12.
APA Gupta, Alok C..,Gaur, Haritma.,Wiita, Paul J..,Pandey, A..,Kushwaha, P..,...&Strigachev, A..(2019).Characterizing Optical Variability of OJ 287 in 2016-2017.ASTRONOMICAL JOURNAL,157(3),12.
MLA Gupta, Alok C.,et al."Characterizing Optical Variability of OJ 287 in 2016-2017".ASTRONOMICAL JOURNAL 157.3(2019):12.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gupta, Alok C.]'s Articles
[Gaur, Haritma]'s Articles
[Wiita, Paul J.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gupta, Alok C.]'s Articles
[Gaur, Haritma]'s Articles
[Wiita, Paul J.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gupta, Alok C.]'s Articles
[Gaur, Haritma]'s Articles
[Wiita, Paul J.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.