Optical flux behaviour of a sample of Fermi blazars

A. J. Mu\~noz-Arjonilla; E. J. Marchesini; G. E. Romero; I. Andruchow; J. A. Combi; J. Mart\'i; J. R. S\'anchez-Sutil; L. Zibecchi; P. Luque-Escamilla; S. A. Cellone

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Optical flux behaviour of a sample of Fermi blazars

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arxiv 1605.03599 v1 pith:JHNTIDHR submitted 2016-05-11 astro-ph.GA astro-ph.HE

E. J. Marchesini , I. Andruchow , S. A. Cellone , J. A. Combi , L. Zibecchi , J. Martí , G. E. Romero , A. J. Muñoz-Arjonilla

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P. Luque-Escamilla J. R. Sánchez-Sutil

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keywords resultsblazarscampaignopticalsampletermvariabilityachieve

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Aims: We aim at investigating the time-behaviour of a sample of gamma-ray blazars. We present the results from a 13 month-long optical photometry monitoring campaign of the blazars PKS 0048-097, PKS 0754+100, HB89 0827+243, PKS 0851+202, PKS 1253-055, PKS1510-089, PKS 1749+096, PKS 2230+114 and PKS 2251+158. Methods: We analyse the variability of each object, focusing on different time-scales (long term, short term, and microvariability), in an attempt to achieve a statistical comparison of the results. Results: After applying a geometric model to explain the variability results, we found that it is possible that a slight change in the direction of the jet generates the variations detected in some objects during this campaign.

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