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
Gamma-Ray and Multiwaveband Emission from Gamma-Ray-Loud BL Lacertae Objects
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
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.
(Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei))
2003, Vol. 20 
