Fan Xuliang1; Bai Jinming1; Liu Hongtao1; Liang Chen2; Liao Nenghui1
Source Publicationresearchinastronomyandastrophysics
AbstractWe collect the second Large Area Telescope AGN catalog (2LAC) and Monitor of Jets in AGN with VLBA Equipment (MOJAVE) quasi-simultaneous data to investigate the radio-γ connection of blazars. The cross sample contains 166 sources. The statistical analysis based on this sample confirms positive correlations between these two bands, but the correlations become weaker as the γ-ray energy increases. The statistical results between various parameters show negative correla- tions of γ-ray photon spectral index with γ-ray loudness for both Flat Spectrum Radio Quasars (FSRQs) and BL Lacertae objects, positive correlations of γ-ray variability index with the γ-ray loudness for FSRQs, a negative correlation of the γ-ray variabil- ity index with the γ-ray photon spectral index for FSRQs, and negative correlations of γ-ray photon spectral index with γ-ray luminosity for FSRQs. These results suggest that the γ-ray variability may be due to changes inside the γ-ray emission region like the injected power, rather than changes in the photon density of the external radiation fields, and the variability amplitude tends to be larger as the γ-rays are closer to the high energy peak of the spectral energy distribution (SED). No correlation of variabil- ity index found for BL Lacertae objects implies that variability behavior may differ below and above the peak energy.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Fan Xuliang,Bai Jinming,Liu Hongtao,et al. theconnectionbetweenradioandrayemissioninfermilatblazars[J]. researchinastronomyandastrophysics,2012,012(011):1475.
APA Fan Xuliang,Bai Jinming,Liu Hongtao,Liang Chen,&Liao Nenghui.(2012).theconnectionbetweenradioandrayemissioninfermilatblazars.researchinastronomyandastrophysics,012(011),1475.
MLA Fan Xuliang,et al."theconnectionbetweenradioandrayemissioninfermilatblazars".researchinastronomyandastrophysics 012.011(2012):1475.
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