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Homework Help: 2 astrophysics probs

  1. Nov 25, 2009 #1
    Hi. If anyone could help me start or solve these problems it'd be greatly appreciated.

    1. The problem statement, all variables and given/known data
    If a quasar varies on a time scale of 4 months, how does the maximum size of the emitting region compare with the Schwarzschild radius for a 10^4 Msun black hole?

    2.Calculate omega(r) and v(r) for the following density models: all of the mass M is at the center of the galaxy (milky way) b) a constant density adding up to a mass M(Rnought) at the suns orbit and no mass beyond
  2. jcsd
  3. Nov 26, 2009 #2


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    Well, what are your thoughts?
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