hmf.density_field.transfer_models.BondEfs¶

class hmf.density_field.transfer_models.BondEfs(cosmo, **model_parameters)[source]¶

Transfer function of Bond and Efstathiou

Parameters

cosmo (astropy.cosmology.FLRW instance) – The cosmology used in the calculation
**model_parameters (unpack-dict) – Parameters specific to this model. In this case, available parameters are the following: a, b, c, nu. To see their default values, check the _defaults class attribute.

Notes

The fit is given as

\[T(k) = \left[1 + (\tilde{a}k + (\tilde{b}k)^{3/2} + (\tilde{c}k)^2)^\nu\right]^{-1/\nu}\]

where \(\tilde{x} = x\alpha\) and

\[\alpha = \frac{0.3\times 0.75^2}{\Omega_{m,0} h^2}.\]

Methods

`__init__`(cosmo, **model_parameters)	Initialize self.
`get_models`()	Get a dictionary of all implemented models for this component.
`lnt`(lnk)	Natural log of the transfer function