Quasars

Questions in this category have been asked by JH

• What is a quasar?
  • What is its spectrum like (both continuum and lines)?
  • Luminosity?

• How do we know that quasars are supermassive black holes? (SR)
  • How can you constrain the radius of the central object? (GR effects on Iron K\alpha line, reverberation mapping)

Astrophysics