The intrinsic γ-ray emissions of Fermi blazars

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2017,（7）
• 页码范围: 25-38
• 页数: 14页
• 语种: 英文
• DOI: 10.1088/1674-4527/17/7/66

摘要

The beaming effect is important for understanding the observational properties of blazars.In this work,we collect 91 Fermi blazars with available radio Doppler factors.γ-ray Doppler factors are estimated and compared with radio Doppler factors for some sources.The intrinsic (de-beamed) γ-ray flux density (fγin),intrinsic γ-ray luminosity (Lγin) and intrinsic synchrotron peak frequency (υσin) are calculated.Then we study the correlations between fiγn and redshift and find that they follow the theoretical relation:log f =-2.0 log z + const.When the subclasses are considered,we find that stationary jets are perhaps dominant in low synchrotron peaked blazars.Sixty-three Fermi blazars with both available short variability time scales (△T) and Doppler factors are also collected.We find that the intrinsic relationship between Lγin and △Tin obeys the Elliot & Shapiro and Abramowicz & Nobili relations.Strong positive correlation between fγin and υpin is found,suggesting that synchrotron emissions are highly correlated with γ-ray emissions.