nbodykit.cosmology.power.zeldovich.
ZeldovichJ0
(k)[source]¶Bases: mcfit.mcfit.mcfit
An integral over \(j_0\) needed to compute the Zeldovich power. The integral is given by:
Methods
__call__ (F[, extrap]) |
|
check (F) |
rough sanity checks on the input |
check
(F)¶rough sanity checks on the input
nbodykit.cosmology.power.zeldovich.
ZeldovichJ1
(k)[source]¶Bases: mcfit.mcfit.mcfit
An integral over \(j_1\) needed to compute the Zeldovich power. The integral is given by:
Methods
__call__ (F[, extrap]) |
|
check (F) |
rough sanity checks on the input |
check
(F)¶rough sanity checks on the input
nbodykit.cosmology.power.zeldovich.
ZeldovichPower
(cosmo, redshift, transfer='CLASS')[source]¶Bases: object
The matter power spectrum in the Zel’dovich approximation.
Parameters: |
---|
cosmo
¶class:Cosmology, astropy.cosmology.FLRW – the object giving the cosmological parameters
sigma8
¶float – the z=0 amplitude of matter fluctuations
redshift
¶float – the redshift to compute the power at
Plin
¶class:LinearPower – the linear power spectrum class used to compute the Zel’dovich power
Attributes
attrs |
The meta-data dictionary |
redshift |
The redshift of the power spectrum |
sigma8 |
The amplitude of matter fluctuations at \(z=0\). |
Methods
__call__ (k) |
Return the Zel’dovich power in \(h^{-3} \mathrm{Mpc}^3 at :attr:`redshift\) and k , where k is in units of \(h \mathrm{Mpc}^{-1}\). |
__call__
(k)[source]¶Return the Zel’dovich power in \(h^{-3} \mathrm{Mpc}^3 at
:attr:`redshift\) and k
, where k
is in units of
\(h \mathrm{Mpc}^{-1}\).
Parameters: | k (float, array_like) – the wavenumbers to evaluate the power at |
---|
attrs
¶The meta-data dictionary
redshift
The redshift of the power spectrum
sigma8
The amplitude of matter fluctuations at \(z=0\).
nbodykit.cosmology.power.zeldovich.
ZeldovichPowerIntegral
(r, n)[source]¶Bases: mcfit.mcfit.mcfit
The integral needed to evaluate the density auto spectrum in the Zel’dovich approximation.
This evaluates:
Methods
__call__ (F[, extrap]) |
|
check (F) |
rough sanity checks on the input |
check
(F)¶rough sanity checks on the input