Multi-Wavelength Variability Properties of Fermi Blazar S5 0716+714

Journal of astrophysics and astronomy

Liang Chen³  F. Li1¹  J. M. Bai1¹  N. H. Liao1 2 3¹  S. S. Weng4²  H. T. Liu1¹ 

[1] Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China.$$;Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China.$$;Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China.$$

关键词: Galaxies: active;    galaxies: jets;    BL Lacertea objects: individual: S5 0716+714;    radiation mechanisms: non-thermal.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown