Long Term Variability and Color Index Variability of 6 Blazar Objects.

Details Long Term Variability and Color Index Variability of 6 Blazar Objects. Long Term Variability and Color Index Variability of 6 Blazar Objects.

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pnaoc...4..102h&link_type=abstract

Astronomical Research and Technology. Publications of National Astronomical Observatories of China (ISSN 1672-7673), Vol. 4, No.

Astronomy and Astrophysics

Astronomy

Blazars, Variability, Color Index, Flare

Scientific paper

Lots of quasi-simultaneous observations for 6 Blazar objects over 15 years were processed and analyzed. The curves of variability and color index variability were obtained. The variabilities of color indices were analyzed intensively. According to the correlation analysis between the color indices and the magnitudes, the authors concluded that the variability of Blazar objects contained the long term achromatic variability and chromatic short flares by comparing the light curves and the curves of color index variablility. It is indicated that the shock-in-jet model modulated by geometrical effect may be the physical mechanism for Blazar variability based on the difference for the color variability.

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