Variability studies and modeling of the blazar PKS 2155-304 in the light of a decade of multi-wavelength observations

J. Chevalier; D. A. Sanchez; P. D. Serpico; J. -P. Lenain; G. Maurin

doi:10.1093/mnras/stz027

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arXiv · 1901.01743

Variability studies and modeling of the blazar PKS 2155-304 in the light of a decade of multi-wavelength observations

J. Chevalier·D. A. Sanchez·P. D. Serpico·J. -P. Lenain·G. Maurin

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Abstract

The variability of the high-frequency peaked BL Lac object PKS 2155-304 is studied using almost 10 years of optical, X-ray and gamma-rays data. Publicly available data have been gathered and analyzed with the aim to characterize the variability and to search for log-normality or periodic behavior. The optical and X-ray range follow a log-normal process; a hint for a periodicity of about 700 days is found in optical and in the high energy (100 MeV <E<300 GeV) range. A one zone, time-dependent, synchrotron self-Compton model is successfully used to reproduce the evolution with energy of the variability and the tentatively reported periodicity.

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J. Chevalier, D. A. Sanchez, P. D. Serpico, J. -P. Lenain, G. Maurin. 2019-01-07. Variability studies and modeling of the blazar PKS 2155-304 in the light of a decade of multi-wavelength observations. https://doi.org/10.1093/mnras%2Fstz027

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