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.
@article{arxiv.1605.03599,
title = {Optical flux behaviour of a sample of Fermi blazars},
author = {E. J. Marchesini and I. Andruchow and S. A. Cellone and J. A. Combi and L. Zibecchi and J. Martí and G. E. Romero and A. J. Muñoz-Arjonilla and P. Luque-Escamilla and J. R. Sánchez-Sutil},
journal= {arXiv preprint arXiv:1605.03599},
year = {2016}
}
Comments
8 pages, 1 figure, accepted for publication in A&A