Multi-Wavelength Variability in PKS 2155-304

Details Multi-Wavelength Variability in PKS 2155-304 Multi-Wavelength Variability in PKS 2155-304

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011japa...32..327z&link_type=abstract

Journal of Astrophysics and Astronomy, Volume 32, Issue 1-2, pp. 327-330

Astronomy and Astrophysics

Astrophysics

Radiation Mechanisms: Non-Thermal, Galaxies: Active, Galaxies: Individual: Pks 2155-304

Scientific paper

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.

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