Key Words

quasars
quasistellar objects, QSOs
cosmological redshift
host galaxy
3C 273
active galaxies
Active Galactic Nuclei, AGNs
radio galaxies
core-halo radio galaxies
lobed radio galaxies
BL-Lacertae objects (blazers)
Seyfert galaxies
optically violent variables (OVVs)
nonthermal emission
synchrotron radiation
relativistic synchrotron jets
polarized light
optical jets
radio jets
supermassive black hole
Virial Theorem
ionization cone
water masers
superluminal motion