Intrinsic Correlations for Flaring Blazars Detected by Fermi

Abstract

Blazars are an extreme subclass of active galactic nuclei. Their rapid variability, luminous brightness, superluminal motion, and high and variable polarization are probably due to a beaming effect. However, this beaming factor (or Doppler factor) is very difficult to measure. Currently, a good way to estimate it is to use the time scale of their radio flares. In this $Letter$, we use multiwavelength data and Doppler factors reported in the literatures for a sample of 86 flaring blazars detected by Fermi to compute their intrinsic multiwavelength data and intrinsic spectral energy distributions, and investigate the correlations among observed and intrinsic data. Quite interestingly, intrinsic data show a positive correlation between luminosity and peak frequency, in contrast with the behavior of observed data, and a tighter correlation between $\gamma$-ray luminosity and the lower energy ones. For flaring blazars detected by Fermi, we conclude that (1) Observed emissions are strongly beamed; (2) The anti-correlation between luminosity and peak frequency from the observed data is an apparent result, the correlation between intrinsic data being positive; and (3) Intrinsic $\gamma$-ray luminosity is strongly correlated with other intrinsic luminosities.

arXiv commentpublished

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Cited by in corpus (17)

• The Central Engines of Fermi Blazars
• On the jet properties of the gamma-ray loud active galactic nuclei
• The Blazar sequence and its Physical Understanding
• The relativistic jet and its central engine of $Fermi$ blazars
• The Intrinsic Properties of Multiwavelength Energy Spectra for Fermi Teraelectronvolt Blazars
• Systematic investigation of X-ray spectral variability of TeV blazars during flares in the $RXTE$ era
• Radio and optical intra-day variability observations of five blazars
• Constraints on the location of $\gamma$-ray emitting region for a sample of blazars with radio core-shift measurements
• Diversity of gamma-ray and Radio Variabilities of Bright Blazars and Implications for gamma-ray Emission Location
• X-ray spectral variations of synchrotron peak in BL Lacs
• Scale invariant jets: from blazars to microquasars
• Further evidences of superluminal AGNs as $\gamma$-ray sources
• The `blazar sequence' in TeV band
• Cluster analysis of the Roma-BZCAT blazars
• Central Engine and Spectral Energy Distribution Properties of High Redshift Gamma Ray Blazars
• On estimators of the jet bolometric luminosity of Fermi 2LAC blazars
• From Equipartition to Curvature: The Spectral Evolution of 4FGL Blazars