MOJAVE. XIX. Brightness Temperatures and Intrinsic Properties of Blazar Jets

We present multi-epoch, parsec-scale core brightness temperature observations of 447 AGN jets from the MOJAVE and 2cm Survey programs at 15 GHz 1994 to 2019. The each jet over time is characterized by its median value variability. find that range temperatures for in our sample much larger than variations within individual jets, consistent with Doppler boosting being primary difference between their state. combine observed apparent speed measurements typical intrinsic Gaussian (4.1 +- 0.6)*10^10 K, suggesting cores are or below equipartition particle magnetic field energy use this derive estimates factor every source sample. For 309 both data, we estimate Lorentz factors viewing angles line sight. Within BL Lac optical class, high-synchrotron-peaked (HSP) Lacs have smaller factors, lower sight intermediate low-synchrotron-peaked (LSP) Lacs. confirm measured radio more likely be detected gamma rays, a strong correlation gamma-ray luminosity sources.