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Gamma-Ray and Multiwaveband Emission from Gamma-Ray-Loud BL Lacertae Objects |
| ZHANG Xiong1,2;ZHAO Gang2;CHENG Guang-Sheng3;ZHANG Li3 |
| 1Department of Physics, Yunnan Normal University, Kunming 650092
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3Department of Physics, The University of Hong Kong, Hong Kong |
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| Cite this article: |
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ZHANG Xiong, ZHAO Gang, CHENG Guang-Sheng et al 2003 Chin. Phys. Lett. 20 1183-1186 |
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Abstract We have collected 18 γ-ray-loud BL Lac with observed data in multiwavedand, we find that γ-ray flux densities correlate better with the near-IR flux densities than those with the optical or x-ray flux densities. There is no correlation between γ-ray and radio flux densities. Possible constraints on the γ-ray emission mechanism are discussed. We suggest that the main γ-ray radiation mechanism is probably the synchrotron self-Compton process. The inverse Compton scattering of the radiation from hot circumscribe dust, by beamed ultrarelativistic electrons, is likely to be an important complementary mechanism.
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| Keywords:
98.54.Cm
97.10.Ri
95.30.Gv
95.85.Pw
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Published: 01 July 2003
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| PACS: |
98.54.Cm
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(Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei))
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97.10.Ri
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(Luminosities; magnitudes; effective temperatures, colors, and spectral classification)
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95.30.Gv
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(Radiation mechanisms; polarization)
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95.85.Pw
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(γ-ray)
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