CosmoMC: SDSS data

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Loison Hoi
Posts: 23
Joined: February 21 2006
Affiliation: McGill University

CosmoMC: SDSS data

Post by Loison Hoi » February 21 2006

Hi All,

There are two parameters for the SDSS data in the CosmoMC code: mpk_points and mpk_kbands.

The comment on mpk.f90 says:

max_mpk_points_use ! in case you don't want the smallest scale modes (eg. sdss)
min_mpk_points_use ! in case you don't want the largest scale modes
max_mpk_kbands_use ! in case you don't want to calc P(k) on the smallest scales (will truncate P(k) to zero here!)
min_mpk_kbands_use ! in case you don't want to calc P(k) on the smallest scales (will truncate P(k) to zero here!)

So I guess mpk_points represents different data set; large value of max_mpk_points means small scales data and small value of min_mpk_points means large scales data. As for the mpk_kbands, it just means the range of k/h space at which we calculate the spectrum. Am I right?

Besides, both max_mpk_kbands and min_mpk_kbands say "smallest scales", a typo?

(I am using July 2005 version.)

Thanks.

Loison Hoi
21 Feb 2006

Antony Lewis
Posts: 1503
Joined: September 23 2004
Affiliation: University of Sussex
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Re: CosmoMC: SDSS data

Post by Antony Lewis » February 21 2006

I think that's all right.

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