Long-term Optical Color Index Variability of Six Blazars

Details Long-term Optical Color Index Variability of Six Blazars Long-term Optical Color Index Variability of Six Blazars

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..373..205h&link_type=abstract

The Central Engine of Active Galactic Nuclei, ASP Conference Series, Vol. 373, proceedings of the conference held 16-21 October,

Physics

2

Scientific paper

We collected many quasi-simultaneous optical observations of six blazars derived from previous published papers over 16 years. The color indices variability was obtained. According to the correlation analysis between color indices and brightness, we found that the variability of blazars contained long-term ``mildly-chromatic'' variations and ``strongly-chromatic'' short outbursts. The shock-in-jet model modulated by geometrical effect may provide the better interpretation for the physical mechanism of blazar variability.

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