Explain why the observable properties of quasars imply that they ...

[bobthebuilder]

Explain why the observable properties of quasars imply that they are objects from the early Universe controlled by supermassive black holes.
 
  What will be an ideal response?

Question 2

The visible surface of the Sun is composed of solid matter.
 
  a. True
  b. False
  Indicate whether the statement is true or false

[ebe]

Answer to Question 1

Quasars have continuous spectra with emission lines of hydrogen. The emission lines display very high redshifts, often greater than 1.0 . The high redshifts are proof that quasars are very distant. A large distance is associated with a long look-back time, so quasars must come from the early Universe.

In order to be visible at such large distances, quasars must be very luminous. The luminosity of a quasar can vary in very short times, sometimes as short as a few hours. The rapid fluctuations show that quasars are small objects, smaller than our Solar System. The only reasonable explanation for a compact, fluctuating high-luminosity source is a supermassive black hole.

Answer to Question 2

False

[bobthebuilder]

Thanks for the timely response, appreciate it

[scottmt]

Excellent