Intrinsic Correlations for Flaring Blazars Detected by Fermi

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...

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Bibliographic Details
Published in:Astrophysical journal. Letters 2017-02, Vol.835 (2), p.38-38
Main Authors: Fan, J. H., Yang, J. H., Xiao, H. B., Lin, C., Constantin, D., Luo, G. Y., Pei, Z. Y., Hao, J. M., Mao, Y. W.
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BEAMS
BL LACERTAE OBJECTS
BL Lacertae objects: general
Blazars
BRIGHTNESS
COMPUTERIZED SIMULATION
Correlation
CORRELATIONS
Doppler
DOPPLER EFFECT
EMISSION
ENERGY SPECTRA
Flares
GALAXIES
galaxies: active
galaxies: jets
GALAXY NUCLEI
GAMMA RADIATION
LUMINOSITY
Peak frequency
POLARIZATION
QUASARS
quasars: general
Spectral energy distribution
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Summary: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 timescale of their radio flares. In this Letter, we use multiwavelength data and Doppler factors reported in the literature 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 γ-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 γ-ray luminosity is strongly correlated with other intrinsic luminosities.
ISSN:2041-8205
2041-8213
DOI:10.3847/2041-8213/835/2/L38