Multi-wavelength emission from 3C 66A: clues to its redshift and gamma-ray emission location

@article{Yan2013MultiwavelengthEF,
  title={Multi-wavelength emission from 3C 66A: clues to its redshift and gamma-ray emission location},
  author={Da-hai Yan and Zhonghui Fan and Yao Zhou and Benzhong Dai},
  journal={Research in Astronomy and Astrophysics},
  year={2013},
  volume={13},
  pages={411-419}
}
  • D. Yan, Z. Fan, +1 author B. Dai
  • Published 6 November 2010
  • Physics
  • Research in Astronomy and Astrophysics
The quasi-simultaneous multi-wavelength emission of TeV blazar 3C 66A is studied by using a one-zone multi-component leptonic jet model. It is found that the quasi-simultaneous spectral energy distribution of 3C 66A can be well reproduced; in particular, the first three months of its average Fermi-LAT spectrum can be well reproduced by the synchrotron self-Compton component plus external Compton component of the broad line region (BLR). Clues to its redshift and gamma-ray emission location are… Expand

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References

SHOWING 1-10 OF 53 REFERENCES
On the Break in the Fermi-Large Area Telescope Spectrum of 3C 454.3
Fermi Gamma-ray Space Telescope observations of the flat spectrum radio quasar 3C 454.3 show a spectral-index change ΔΓ 1.2 ± 0.3 at break energy E br 2.4 ± 0.3 GeV. Such a sharp break isExpand
Modeling the Spectral Energy Distribution and Variability of 3C 66A during the WEBT campaign of 2003 -- 2004
The BL Lac object 3C 66A was observed in an extensive multiwavelength monitoring campaign from July 2003 till April 2004. The spectral energy distribution (SED) was measured over the entireExpand
THE SPECTRAL ENERGY DISTRIBUTION OF FERMI BRIGHT BLAZARS
We have conducted a detailed investigation of the broadband spectral properties of the gamma-ray selected blazars of the Fermi LAT Bright AGN Sample (LBAS). By combining our accurately estimatedExpand
Absorption of 10 Gev--1 Tev Gamma Rays from 3C 279
In this paper, we revisit gamma-ray-emitting region for 10 GeV-1 TeV gamma rays from 3C 279 through studying the photon-photon absorption optical depth due to the diffuse radiation of the broad-lineExpand
Estimates of Emission-Region Locations of Fermi Flat-Spectrum Radio Quasars
We study the locations of emission regions through modelling the quasi-simultaneous multi-frequency spectral energy distributions of 21 Fermi flat spectrum radio quasars (FSRQs) in the frame of aExpand
Multi-wavelength Observations of the Flaring Gamma-ray Blazar 3C 66A in 2008 October
The BL Lacertae object 3C 66A was detected in a flaring state by the Fermi Large Area Telescope (LAT) and VERITAS in 2008 October. In addition to these gamma-ray observations, F-GAMMA, GASP-WEBT,Expand
Fermi Large Area Telescope Constraints on the Gamma-ray
The Extragalactic Background Light (EBL) includes photons with wavelengths from ultraviolet to infrared, which are effective at attenuating gamma rays with energy above ~10 GeV during propagationExpand
A low level of extragalactic background light as revealed by γ-rays from blazars
The diffuse extragalactic background light consists of the sum of the starlight emitted by galaxies through the history of the Universe, and it could also have an important contribution from theExpand
Multifrequency emission analysis of TeV blazars H 2356–309 and 1ES 1218+304
The multiband nonthermal emissions in radio, X-ray, and very high-energy (VHE) γ-ray bands from two distant blazars, H 2356–309 and 1ES 1218+304, have been detected, and, especially from recentExpand
The Redshift Dependence of Gamma-Ray Absorption in the Environments of Strong-Line AGNs
The case of {gamma}-ray absorption due to photon-photon pair production of jet photons in the external photon environments, such as the accretion disk and the broad-line region radiation fields, ofExpand
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