cosmology.h

Go to the documentation of this file.

/* This file is part of Cloudy and is copyright (C)1978-2025 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
 
#ifndef COSMOLOGY_H_
#define COSMOLOGY_H_

#define CMB_TEMP        2.725

realnum GetDensity(realnum z);

realnum GetHubbleFactor(realnum z);

struct t_cosmology {
 
        realnum redshift_current;
        realnum redshift_start;
        realnum redshift_step;
 
        realnum omega_baryon;
        realnum omega_rad;
        realnum omega_lambda;
        realnum omega_matter;
        realnum omega_k;
 
        realnum h;
        realnum H_0;
 
        realnum f_He;
 
        bool lgDo;
 
        t_cosmology()
        {
                redshift_current = 0.f;
                redshift_start = 0.f;
                redshift_step = 0.f;
                omega_baryon = 0.04592f;
                omega_rad = 8.23e-5f;
                omega_lambda = 0.7299177f;
                omega_matter = 0.27f;
                omega_k = 0.f;
                /* the Hubble parameter in 100 km/s/Mpc */
                h = 0.71f;
                /* the Hubble parameter in km/s/Mpc */
                H_0 = 100.f*h;
                lgDo = false;
        }
};
extern t_cosmology cosmology;
 
 
#endif /* COSMOLOGY_H_ */