An alternative Universe is dominated by a single type of matter with equation of state parameter w = -0.1. The first acoustic peak in this Universe is observed at multipole number l = 60. Determine the angle on the sky, 6, corresponding to this multipole. Given that the first acoustic peak corresponds to the present angle on the sky of the sound horizon at decoupling, determine whether this Universe is open, closed or flat. The temperature at decoupling is Tdee = 3030 K, and the present temperature is To = 2.73 K. %3D %3D
An alternative Universe is dominated by a single type of matter with equation of state parameter w = -0.1. The first acoustic peak in this Universe is observed at multipole number l = 60. Determine the angle on the sky, 6, corresponding to this multipole. Given that the first acoustic peak corresponds to the present angle on the sky of the sound horizon at decoupling, determine whether this Universe is open, closed or flat. The temperature at decoupling is Tdee = 3030 K, and the present temperature is To = 2.73 K. %3D %3D
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Transcribed Image Text:An alternative Universe is dominated by a single type of matter with equation
of state parameter w = -0.1. The first acoustic peak in this Universe is
observed at multipole number 1 = 60.
Determine the angle on the sky, 6, corresponding to this multipole.
Given that the first acoustic peak corresponds to the present angle on the sky
of the sound horizon at decoupling, determine whether this Universe is open,
closed or flat. The temperature at decoupling is Tdee = 3030 K, and the present
temperature is To = 2.73 K.
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