CAMB: magnetic vector modes

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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daniela paoletti
Posts: 2
Joined: September 21 2006
Affiliation: bologna university

CAMB: magnetic vector modes

Post by daniela paoletti » December 20 2006

Hi,
when I select in params.ini the magnetic vector mode,
there are no evident options for selecting an amplitude and spectral index for the
magnetic part. Am I missing something or the default option in CAMB corresponds to
fixed values for these parameters, following the notation of
A. Lewis " CMB anisotropies from primordial inhomogeneus magnetic fields"(2004)?

Cheers
Daniela

Antony Lewis
Posts: 1941
Joined: September 23 2004
Affiliation: University of Sussex
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Re: CAMB: magnetic vector modes

Post by Antony Lewis » December 20 2006

It re-interprets the scalar mode settings as vector mode settings when you turn on vector C_l.

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