出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Rapid variability of the TeV emission in several blazars implies a central black hole mass MBH <
108M , appreciably smaller than the values estimated from the MBH Lbulg relation, and Doppler
factors for the g -ray emitting uid much larger than those associated with radio patterns. We
discuss the conditions in the central engine required to account for the short timescales and large
luminosities observed, and propose some explanations for the inferred kinematics of the source
on various scales.
