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Quasars as indicators of distance?

  1. Aug 10, 2012 #1
    I have been doing some thinking about quasars and have been wondering. Are we able to sue the redshift of a quasar to find out the distance of a galaxy?

    If we know the redshift at a galaxy can't we just use Vrecession= (c*(λ-λo))/(λo), then substitute this value into Vrecession=Hubble's constant *Distance and rearrange to find the distance?

    Am I correct in this assumption or am I way off, any feedback would be greatly appreciated, thanks.

  2. jcsd
  3. Aug 11, 2012 #2


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    Staff: Mentor

    It's a long time since I studied anything astronomic, so I can't say much here. What you say would produce a number, but won't distance calculations based on red shift be flummoxed by the quasar's own velocity?

    From wikipedia we read:
  4. Aug 11, 2012 #3
    Hmm yeah that is a good point.
  5. Aug 11, 2012 #4


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    Gold Member

    I think it would be difficult to find a lawyer who would take the case.
  6. Aug 11, 2012 #5


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    Staff: Mentor

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