Optical and IR monitoring of the BL Lac object S5 0716+714 from 2001 2004

Details Optical and IR monitoring of the BL Lac object S5 0716+714 from 2001 2004 Optical and IR monitoring of the BL Lac object S5 0716+714 from 2001 2004

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006arep...50..458h&link_type=abstract

Astronomy Reports, vol. 50, Issue 6, p.458-467

Astronomy and Astrophysics

Astronomy

5

Pacs Numbers 98.54.C

Scientific paper

Multicolor (BV RIJHK) observations of the BL Lac object S5 0716+714 carried out irom 2001 2004 indicate that the spectral energy distribution of the slowly varying component remained constant over the entire wavelength interval and over the three-year observation period. The distribution can be represented by the power law F v ˜ v -1.12, providing evidence that this component has a synchrotron nature. The color characteristics of very rapid variability detected on several nights are the same as those for the slowly varying component. An analysis of published data on the color variability of the object for previous years indicates that the color characteristics of the slowly varying component are stable, independent of the time intervals considered and the characteristic variability time scales.

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