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Homework Help: Calculating the density parameter (Cosmology)

  1. Nov 27, 2012 #1
    1. The problem statement, all variables and given/known data

    Decide the density parameter from the following data:

    z=0.04, m= 17.38 and σ=0.19

    2. Relevant equations

    Definition of the density parameter:


    Where p0 is the current density and pc is the critical density.

    3. The attempt at a solution

    I feel like I don't have enough information to calculate it as I'm unable to calculate the current density of the universe. Any help is greatly appreciated! Thanks.
  2. jcsd
  3. Nov 27, 2012 #2
    Two pictures of an attempt at a solution (no units)>



  4. Nov 27, 2012 #3
    Hello? (hello)
    Is there anybody in here?
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