eZ {CRAC}R Documentation

compute E(z) of given cosmology

Description

Compute the E(z)=H(z)/H_0, or

E(z)\equiv√{Ω_\mathbf{M}(1+z)^3+Ω_\mathbf{k}(1+z)^2+ Ω_Λ(1+z)^{(1+w)},} where we omit the radiation component.

Usage

eZ(z, cosmo)

Arguments

z

Redshift

cosmo

cosmology parameter list, contains 'omegaM0', 'omegaL0', 'omegaK'

Value

The dimentionless Hubble constant H(z)/H_0

References

Equation (14) in [H99]

See Also

eZ2,parameter.fidcosmo

Examples

eZ(1.2,parameter.fidcosmo)

[Package CRAC version 1.0 Index]