1-a What was the energy density of the MBR when light now arriving at the earth left a distant quasar with redshift z = 4.0?

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1-a What was the energy density of the
MBR when light now arriving at the earth
left a distant quasar with redshift z = 4.O?
b) What was the CMB energy density at the
time of decoupling at z = 1088 (according
to a WMAP result)?
Transcribed Image Text:1-a What was the energy density of the MBR when light now arriving at the earth left a distant quasar with redshift z = 4.O? b) What was the CMB energy density at the time of decoupling at z = 1088 (according to a WMAP result)?
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