Multi-Wavelength Variability in PKS 2155-304

作者：Zheng Y G^*; Zhang L; Zhang X; Ma H J

来源：Journal of Astrophysics and Astronomy, 2011, 32(1-2): 327-330.

• Radiation mechanisms: non-thermal
• galaxies: active
• galaxies: individual: PKS 2155-304

We study multi-wavelength variability in BL Lacertae object PKS 2155-304 in the frame of the time dependent one-zone synchrotron self-Compton (SSC) model, where stochastic particle acceleration is taken into account. In this model, a homogeneously and isotropically spherical structure is assumed, the Fokker-Planck type equation which describes the evolution of the particles energy is numerically solved, and the synchrotron and self-Compton components from the spherical blob are calculated. Our results can reproduce observed spectra energy distribution (SED) and give definite predictions for the flux and spectral variability of PKS 2155-304. We find that particle injection rate, magnetic field and Doppler factor in the acceleration zone are important parameters for explaining its flaring behaviour.

• 出版日期2011-6
• 单位云南师范大学; 云南大学; 云南林业职业技术学院