14. In general, the radio jets seen extending from the nuclei of active galaxies have:
C. a nonthermal (synchrotron) spectrum.
15. The lighthouse model for the emission of radiation by pulsars is most noted for:
B. directing the radiation into beams like a flashlight.
16. Astrophysicists are most certain that a black hole is:
C. the remains of stardeath with infinite density.
17. The Generic Model for AGN would not be useful in understanding:
C. pulsars.