Articulo
Optical flux behaviour of a sample of Fermi blazars
Registro en:
issn:0004-6361
Autor
Marchesini, Ezequiel Joaquín
Andruchow, Ileana
Cellone, Sergio Aldo
Combi, Jorge Ariel
Zibecchi, Lorena
Martí, J.
Romero, Gustavo Esteban
Muñoz-Arjonilla, A.J.
Luque-Escamilla, P.
Sánchez-Sutil, J.R.
Institución
Resumen
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. Facultad de Ciencias Astronómicas y Geofísicas