Optical flux behaviour of a sample of Fermi blazars

MARCHESINI, E.J.; ANDRUCHOW, I.; CELLONE, SA; COMBI, J. A.; ZIBECCHI; J.; MARTÍ; ROMERO, G. E.; A.J. MUÑOZ-ARJONILLA; LUQUE-ESCAMILLA, L. P.; SANCHEZ-SUTIL, J.

ASTRONOMY AND ASTROPHYSICS

EDP SCIENCES S A

Lugar: Paris; Año: 2016 vol. 591 p. 21 - 27

0004-6361

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, PKS 1510-089, 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.Differential photometry results used in the statistical analysis reported in Table 2 are only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/591/A21