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Multiband optical v...
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Dhiman, VinitAryabhatta Res Inst Observat Sci ARIES, Naini Tal 263001, India.;Pt Ravishankar Shukla Univ, Sch Studies Phys & Astrophys, Amanaka GE Rd, Raipur 492010, India.
(author)
Multiband optical variability of the TeV blazar PG 1553+113 in 2019
- Article/chapterEnglish2022
Publisher, publication year, extent ...
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2022-12-20
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Oxford University Press (OUP),2022
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-324815
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-324815URI
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https://doi.org/10.1093/mnras/stac3709DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-215705URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20230320
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We report the flux and spectral variability of PG 1553 + 113 on intra-night (IDV) to short-term time-scales using BVRI data collected over 91 nights from 28 February to 8 November 2019 employing 10 optical telescopes: three in Bulgaria, two each in India and Serbia, and one each in Greece, Georgia, and Latvia. We monitored the blazar quasi-simultaneously for 16 nights in the V and R bands and 8 nights in the V, R, I bands and examined the light curves (LCs) for intra-day flux and colour variations using two powerful tests: the power-enhanced F-test and the nested ANOVA test. The source was found to be significantly (>99 per cent) variable in 4 nights out of 27 in R-band, 1 out of 16 in V-band, and 1 out of 6 nights in I-band. No temporal variations in the colours were observed on IDV time-scale. During the course of these observations the total variation in R-band was 0.89 mag observed. We also investigated the spectral energy distribution (SED) using B-, V-, R-, and I-band data. We found optical spectral indices in the range of 0.878 +/- 0.029 to 1.106 +/- 0.065 by fitting a power law (F-nu proportional to nu(-alpha)) to these SEDs of PG 1553 + 113. We found that the source follows a bluer-when-brighter trend on IDV time-scales. We discuss possible physical causes of the observed spectral variability.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Gupta, Alok C.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263001, India.;Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China.
(author)
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Kurtanidze, Sofia O.Abastumani Observ, Abastumani 0301, Georgia.;Heidelberg Univ, Zent Astron, Landessternwarte, Konigstuhl 12, D-69117 Heidelberg, Germany.
(author)
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Eglitis, IUniv Latvia, Inst Astron, Jelgavas 3, LV-1004 Riga, Latvia.
(author)
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Strigachev, A.Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.;Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.
(author)
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Damljanovic, G.Astron Observ, Volgina 7, Belgrade 11060, Serbia.
(author)
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Wiita, Paul J.Coll New Jersey, Dept Phys, 2000 Pennington Rd, Ewing, NJ 08628 USA.
(author)
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Gu, MinfengAbastumani Observ, Abastumani 0301, Georgia.;Heidelberg Univ, Zent Astron, Landessternwarte, Konigstuhl 12, D-69117 Heidelberg, Germany.
(author)
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Gaur, Haritma
(author)
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Vince, OliverAstron Observ, Volgina 7, Belgrade 11060, Serbia.
(author)
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Bachev, R.Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.;Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.
(author)
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Bisen, D. P.Pt Ravishankar Shukla Univ, Sch Studies Phys & Astrophys, Amanaka GE Rd, Raipur 492010, India.
(author)
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Ibryamov, S.Univ Shumen, Dept Phys & Astron, 115 Univ Str, Shumen 9700, Jiangsu, Bulgaria.
(author)
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Ivanidze, R. Z.Abastumani Observ, Abastumani 0301, Georgia.,Shanghai Frontiers Sci Ctr Gravitat Wave Detect, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.
(author)
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Jovanovic, Miljana D.Astron Observ, Volgina 7, Belgrade 11060, Serbia.
(author)
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Kurtanidze, Omar M.Abastumani Observ, Abastumani 0301, Georgia.;Heidelberg Univ, Zent Astron, Landessternwarte, Konigstuhl 12, D-69117 Heidelberg, Germany.;Kazan Fed Univ, Engelhardt Astron Observ, Tatarstan, Russia.
(author)
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Nikolashvili, M. G.Abastumani Observ, Abastumani 0301, Georgia.;Heidelberg Univ, Zent Astron, Landessternwarte, Konigstuhl 12, D-69117 Heidelberg, Germany.
(author)
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Semkov, E.Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.;Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.
(author)
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Spassov, B.Bulgarian Acad Sci, Inst Astron, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.;Bulgarian Acad Sci, Natl Astron Observ, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria.
(author)
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Stojanovic, M.Astron Observ, Volgina 7, Belgrade 11060, Serbia.
(author)
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Villarroel, BeatrizStockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Instituto de Astrofisica de Canarias, Spain,Nordita SU(Swepub:su)bevi1144
(author)
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Xu, HaiguangShanghai Frontiers Sci Ctr Gravitat Wave Detect, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.;Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.
(author)
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Zhang, ZhongliShanghai Frontiers Sci Ctr Gravitat Wave Detect, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.
(author)
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Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263001, India.;Pt Ravishankar Shukla Univ, Sch Studies Phys & Astrophys, Amanaka GE Rd, Raipur 492010, India.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263001, India.;Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China.
(creator_code:org_t)
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In:Monthly notices of the Royal Astronomical Society: Oxford University Press (OUP)519:2, s. 2796-28110035-87111365-2966
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Dhiman, Vinit
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Gupta, Alok C.
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Kurtanidze, Sofi ...
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Eglitis, I
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Strigachev, A.
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Damljanovic, G.
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Wiita, Paul J.
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Gu, Minfeng
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Gaur, Haritma
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Vince, Oliver
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Bachev, R.
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Bisen, D. P.
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Ibryamov, S.
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Ivanidze, R. Z.
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Jovanovic, Milja ...
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Kurtanidze, Omar ...
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Nikolashvili, M. ...
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Semkov, E.
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Spassov, B.
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Stojanovic, M.
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Villarroel, Beat ...
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Xu, Haiguang
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Zhang, Zhongli
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