Hi Antony!
I'm studying the matter power spectrum. I discovered that actually mpk.f90 marginalizes over the amplitude of the power spectrum. What do you suggest if I need to fit also the normalization? Can I simply turn "Q_marge = F"? I tried to do that, but apparently the power spectrum output is a nonsense.
The reason why cosmomc doesn't care about the amplitude depends on the bad quality of the data?
Can you help me?
Thank you very much
Davide
Cosmomc Matter Power Spectrum
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Re: Cosmomc Matter Power Spectrum
CosmoMC assumes an unknown scale-independent bias between what you observe (e.g. biased galaxies) and the matter power spectrum. As well as marginalizing over b^2 with flat prior it can also marginalize over Q.
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- Posts: 7
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- Affiliation: University of Rome, Torvergata
Cosmomc Matter Power Spectrum
Thank you very much, Antony.
I also went through the papers cited in mpk.f90 and that clarified things.
Thank you again
Davide
I also went through the papers cited in mpk.f90 and that clarified things.
Thank you again
Davide