UV and X-ray Variability of Blazars
It is well established that the blazars show flux variations in the complete electromagnetic (EM) spectrum on all possible time scales ranging from a few tens of minutes to several years. Here we report the review of various UV and X-ray flux variability properties of blazars. Our analysis show that UV variability amplitude is smaller than X-rays, mostly soft X-rays hardness ratio show correlations with blazar luminosity and different modes of variability might be operating for different time scales and epochs. Quasi periodic oscillations are seen on a few occasions in blazars, higher fraction of high energy peaked blazars show intra day and short term variabilities in X-rays but variability duty cycle is much less in optical bands on intra day time scale compared to low energy peaked blazars. But these results are yet to be established.
Alok C.Gupta
Aryabhatta Research Institute of Observational Sciences (ARIES),Nainital 263 129,India
国际会议
International Conference of Multiwavelength Variability of Blazars(Blazar多波段光变国际学术会议)
广州
英文
155-161
2010-09-20（万方平台首次上网日期，不代表论文的发表时间）