CAMB: equations.f90: what is y(EV%g_ix+1)?

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
Post Reply
Dahee Lee
Posts: 9
Joined: April 16 2018
Affiliation: Kyungpook National University

CAMB: equations.f90: what is y(EV%g_ix+1)?

Post by Dahee Lee » April 30 2018

Hi.
I have just simple question.
In subroutine initial, equations.f90 in CAMB,
what does y(EV%g_ix+1) mean?
I know y(EV%g_ix) is clxg, and this is density perturbation of photon.
But I don't know about y(EV%g_ix+1).
Just differential value about tau?

Any help would be appreciated.

Code: Select all

    
!  Photons
    y(EV%g_ix)=InitVec(i_clxg)
    y(EV%g_ix+1)=InitVec(i_qg)

Antony Lewis
Posts: 1361
Joined: September 23 2004
Affiliation: University of Sussex
Contact:

Re: CAMB: equations.f90: what is y(EV%g_ix+1)?

Post by Antony Lewis » May 01 2018

It's the L=1 moment (the photon heat flux).

Dahee Lee
Posts: 9
Joined: April 16 2018
Affiliation: Kyungpook National University

CAMB: equations.f90: what is y(EV%g_ix+1)?

Post by Dahee Lee » May 01 2018

Thank you very much for your answer.

Post Reply