SciPy

darkhistory.physics.d_xe_Saha_dz

darkhistory.physics.d_xe_Saha_dz(rs, species)

z-derivative of the Saha equilibrium ionization value.

Parameters:
rs : float

The redshift in 1+z.

species : {‘singlet’, ‘triplet’}
Returns:
float

The derivative of the Saha equilibrium d xe/dz.

Notes

See astro-ph/9909275 and 1011.3758 for details.

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