The Intrinsic Properties of Multiwavelength Energy Spectra for Fermi Teraelectronvolt Blazars

Abstract

In this paper, we have selected a sample of 64 teraelectronvolt blazars, with redshift, from those classified in the fourth Fermi Large Area Telescope source catalog\footnote{\url{https://fermi.gsfc.nasa.gov/ssc/data/access/lat/8yr_catalog/}}. We have obtained the values of the relevant physical parameters by performing a log-parabolic fitting of the average-state multiwavelength spectral energy distributions. We estimate the range of the radiation zone parameters, such as the Doppler factor ($D$), the magnetic field strength ($B$), the radiative zone radius ($R$) and the peak Lorentz factor (${\gamma }_{\mathrm{p}}$) of nonthermal electrons. Here, we show that (1) there is a strong linear positive correlation between the intrinsic synchrotron peak frequency and the intrinsic inverse Compton scattering (ICs) peak frequency among different types of blazars; (2) if radio bands are excluded, the spectral index of each band is negatively correlated with the intrinsic peak frequency; (3) there is a strong linear negative correlation between the curvature at the peak and the intrinsic peak frequency of the synchrotron bump, and a weak positive correlation between the curvature at the peak and the intrinsic peak frequency of the ICs bump; (4) there is a strong linear positive correlation between the intrinsic ICs peak luminosity and intrinsic $\gamma$-ray luminosity and between the intrinsic ICs peak frequency and peak Lorentz factor; (5) there is a strong negative linear correlation between $\log \mathrm{B}$ and $\log {\gamma }_{\mathrm{p}}$; and (6) there is no correlation between $\log \mathrm{R}$ and $\log {\gamma }_{\mathrm{p}}$.

publication in ApJ. 25 pages, 13 figures, 5 table

References in corpus (19)

• Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies
• The Imprint of The Extragalactic Background Light in the Gamma-Ray Spectra of Blazars
• The Spectral Energy Distributions of Fermi Blazars
• Fermi/LAT broad emission line blazars
• X-ray spectral evolution of TeV BL Lac objects: eleven years of observations with BeppoSAX, XMM-Newton and SWIFT satellites
• Blazar sequence - an artefact of Doppler boosting
• Constraints on minimum electron Lorentz factor and matter content of jets for a sample of bright Fermi blazars
• The curvature of spectral energy distribution of blazars
• VLBI observations of seven BL Lac objects from RGB sample
• Intrinsic Correlations for Flaring Blazars Detected by Fermi
• Discerning the $\gamma$-ray emitting region in the flat spectrum radio quasars
• The debeamed luminosity, sychrotron peak frequency and black hole mass of BL Lac objects
• TeV-peaked candidate BL Lac objects
• Particle acceleration and synchrotron self-Compton emission in blazar jets I : an application to the quiescent emission
• Empirical multi-wavelength prediction method for very high energy gamma-ray emitting BL Lacs
• Constraints on the location of the gamma-ray emission region for the gamma-ray-loud radio source GB 1310+487
• A time-dependent particle acceleration and emission model: Understanding the particle spectral evolution and blazar flares
• Validation of a new background discrimination method for the TACTIC TeV $\gamma$-ray telescope with Markarian 421 data
• An Explanation for 13 consecutive days activities of Mrk 421

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