Constraints on the Physical Parameters of TeV Blazars

摘要: We consider the constraints that can be derived from spectral shape and variability of TeV blazars on homogeneous synchrotron self-Compton (SSC) model. Assuming relativistic electron spectrum is a broken power law, in which break energy free parameter, we write analytical formulae allow us to connect observable quantities physical parameters also give approximate analytic for case Compton scattering occurring Klein-Nishina regime, particular relevance Blazars. In find that, even latter power-law component present at highest energies. Further restrictions parameter space are set assumption results balance between cooling escape soft photon lags measured some sources derive radiative high-energy particles. The summarized as allowed regions Doppler factor-magnetic field principle sufficient determine model their uncertainties unequivocally. apply method three well-studied sources: Mrk 421, PKS 2155-304, 501. For 421 available data constrain fully. additional found consistent with parameters, supporting proposed interpretation. not yet detected band, estimate peak frequency (40 GeV) expected flux. similar two sources, relatively large value factor (δ ~ 25) magnetic B 0.2 G. 501 both historical low state flaring observed 1997 April. first case, consistency various assumptions reached δ 10 0.3 high state, somewhat larger indicated, while extremely requires continuous injection/reacceleration