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

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arxiv 1901.01743 v1 pith:Z75DXAUP submitted 2019-01-07 astro-ph.HE

classification astro-ph.HE
keywords variabilityopticaldataenergyperiodicityrangex-rayalmost
verification ladder T0 review T1 audit T2 compute T3 formal
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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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Cited by 2 Pith papers

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    New IXPE X-ray polarimetry and optical monitoring of PG 1553+113 reveal variable polarization and a large EVPA swing, supporting jet models with related but non-co-spatial X-ray and optical emission regions.

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    astro-ph.HE 2025-12 conditional novelty 4.0 of 10

    Mrk 421's X-ray spectrum switches between two discrete electron-index states, with the break energy shifting higher as the source brightens, as seen in both flux- and time-resolved AstroSat data.

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