| The Standard Dust Models (Λ=0) |
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| • | Distance
Measures as a function of redshift |
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| – | Then
to find the proper distance D, recall from chapter 5
that D = R |
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| sin(r/R)
where script R is given by eq. 7-19. For an exercise you |
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| could
derive the general expression: |
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| – | Notice
what happens for an empty universe.
Deriving this was a |
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| closed
book exam question I had in grad school (prof assumed we |
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| had
the curiosity to check this for ourselves). |
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