Abstract
The multi-wavelength variability properties of blazar S5 0716 + 714 are reported. We construct multi-wavelength light curves of radio, optical, X-ray and γ-ray including our optical observation at Yunnan Observatories. In all the bands, the light curves show intense variabilities. The variability amplitudes in γ-ray and optical bands are larger than those in the hard X-ray and radio bands. The characteristic variability timescales at 14.5 GHz, optical, X-ray, and γ-ray bands are comparable. The variations of the hard X-ray and 14.5GHz emissions are correlated with zero lag, and so are the V band and γ-ray variations. The multi-wavelength variability behaviours can be naturally explained by the classic leptonic model. We model the average SED of S5 0716 + 714 by leptonic model. The SSC + ERC model using the external seed photons from hot dust or Broad Line Region (BLR) emission is probably favourable avoiding the extreme input parameters from the pure SSC model.
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Acknowledgements
This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Centre (HEASARC), provided by NASA’s Goddard Space Flight Centre. We thank Makoto Uemura for their kindness to allow us to use the published Kanata optical/NIR data. Data from the Steward Observatory spectropolarimetric monitoring project were used. This programme is supported by Fermi Guest Investigator grants NNX08AW56G, NNX09AU10G and NNX12AO93G. This research has made use of data from the University of Michigan Radio Astronomy Observatory which has been supported by the University of Michigan and by a series of grants from the National Science Foundation, most recently AST-0607523. This work is financially supported by the 973 Program (grant 2009CB824800), the National Natural Science Foundation of China (NSFC; grants 10903025, 10973034, 11133006, 11273052, 11233006, 11173043, 11133002 and 11103060) and the Youth Innovation Promotion Association, CAS.
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Liao, N., Bai, J., Liu, H. et al. Multi-Wavelength Variability Properties of Fermi Blazar S5 0716+714. J Astrophys Astron 35, 453–456 (2014). https://doi.org/10.1007/s12036-014-9251-7
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DOI: https://doi.org/10.1007/s12036-014-9251-7