PROPERTIES OF BLAZAR JETS DEFINED BY AN ECONOMY OF POWER

The absolute power of a relativistic black hole jet includes the power in the magnetic field, the leptons, the hadrons, and the radiated photons. A power analysis of a relativistic radio/gamma-ray blazar jet leads to bifurcated leptonic synchrotron-Compton (LSC) and leptohadronic synchrotron (LHS) solutions that minimize the total jet power. Higher Doppler factors with increasing peak synchrotron frequency are implied in the LSC model. Strong magnetic fields B' greater than or similar to 100 G are found for the LHS model with variability times less than or similar to 10(3) s, in accord with highly magnetized, reconnection-driven jet models. Proton synchrotron models of greater than or similar to 100 GeV blazar radiation can have sub-Eddington absolute jet powers, but models of dominant GeV radiation in flat spectrum radio quasars require excessive power.