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arxiv: 0807.2253 · v2 · submitted 2008-07-14 · 🌌 astro-ph

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Patterns of variability in gamma-ray blazars

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classification 🌌 astro-ph
keywords blazarsanalyzedgamma-rayvariabilityx-rayappearsbeenbright
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Preliminary results of a systematic study on the simultaneous optical-to-X-rays variability in blazars are presented. Data from Swift observations of four bright gamma-ray blazars (3C 279, ON+231, S5 0716+71, PKS 2155-304) have been analyzed, compared, and discussed. Specifically, 3C 279 shows a variable flattening in the low energy part of the X-ray spectrum that appears to be confined in a specific X-ray vs optical/UV fluxes region. Some implications are shortly analyzed.

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