CAMB Matter Power Spectrum
-
- Posts: 6
- Joined: January 22 2008
- Affiliation: New Mexico Tech
CAMB Matter Power Spectrum
Hi
I am using the CAMB package to get the matter power spectrum. The output file 'test_matterpower.dat' seems to have matter power spectrum as a function of k/h . But what are the units of Matter Power Spectrum and the k-value?
I am used to seeing the power spectrum in the EoR papers in mK^2 and the k in Mpc^-1.
Thanks
Abhi
I am using the CAMB package to get the matter power spectrum. The output file 'test_matterpower.dat' seems to have matter power spectrum as a function of k/h . But what are the units of Matter Power Spectrum and the k-value?
I am used to seeing the power spectrum in the EoR papers in mK^2 and the k in Mpc^-1.
Thanks
Abhi
-
- Posts: 1944
- Joined: September 23 2004
- Affiliation: University of Sussex
- Contact:
Re: CAMB Matter Power Spectrum
everything in matterpower is in Mpc/h units.
-
- Posts: 6
- Joined: January 22 2008
- Affiliation: New Mexico Tech
CAMB Matter Power Spectrum
Is there a normalization constant involved in converting this to the scale of mK or Jansky (as seen in most of the literature) ??
Thanks
Abhi
Thanks
Abhi
-
- Posts: 1944
- Joined: September 23 2004
- Affiliation: University of Sussex
- Contact:
Re: CAMB Matter Power Spectrum
How the power spectrum of the linear dark matter perturbations relates to any given observable is not generally obvious. If you are asking about 21cm I suggest you read astro-ph/0608032.