Struct CosmoOpts

pub struct CosmoOpts {
    pub omega_b: Option<f64>,
    pub omega_m: Option<f64>,
    pub h: Option<f64>,
    pub n_eff: Option<f64>,
    pub y_p: Option<f64>,
    pub t_cmb: Option<f64>,
    pub preset: Option<String>,
}

Cosmology parameters.

Fields

omega_b: Option<f64>

Fractional baryon density Ω_b (--omega-b). Converted internally to the physical density ω_b = Ω_b h² before the Cosmology struct is built.

omega_m: Option<f64>

Fractional total matter density Ω_m = Ω_b + Ω_cdm (--omega-m). Combined with omega_b and h to compute the physical CDM density ω_cdm = (Ω_m − Ω_b) h².

h: Option<f64>

Reduced Hubble parameter h = H₀ / (100 km/s/Mpc) (--h).

n_eff: Option<f64>

Effective number of relativistic species N_eff (--n-eff).

y_p: Option<f64>

Helium mass fraction Y_p (--y-p).

t_cmb: Option<f64>

CMB temperature today, in K (--t-cmb).

preset: Option<String>

Named preset (--cosmology) such as default, planck2015, planck2018. Individual flags above override preset values.

Trait Implementations

impl Debug for CosmoOpts

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for CosmoOpts

fn default() -> Self

Returns the “default value” for a type.