Structure containing all information on non-linear spectra.
Once initialized by fourier_init(), contains a table for all two points correlation functions and for all the ai,bj functions (containing the three points correlation functions), for each time and wave-number.
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enum non_linear_method |
method |
method for computing non-linear corrections (none, Halogit, etc.)
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enum source_extrapolation |
extrapolation_method |
method for analytical extrapolation of sources beyond pre-computed range
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enum hmcode_baryonic_feedback_model |
feedback |
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double |
c_min |
to choose between different baryonic feedback models in hmcode (dmonly, gas cooling, Agn or supernova feedback)
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double |
eta_0 |
for HMcode: minimum concentration in Bullock 2001 mass-concentration relation
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double |
z_infinity |
for HMcode: halo bloating parameter
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short |
has_pk_eq |
for HMcode: z value at which Dark Energy correction is evaluated needs to be at early times (default flag: in case wa_fld is defined and non-zero, should we use the pk_eq method?
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int |
index_md_scalars |
set equal to phr->index_md_scalars (useful since this module only deals with scalars)
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int |
ic_size |
for a given mode, ic_size[index_md] = number of initial conditions included in computation
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int |
ic_ic_size |
for a given mode, ic_ic_size[index_md] = number of pairs of (index_ic1, index_ic2) with index_ic2 >= index_ic1; this number is just N(N+1)/2 where N = ic_size[index_md]
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short * |
is_non_zero |
for a given mode, is_non_zero[index_md][index_ic1_ic2] is set to true if the pair of initial conditions (index_ic1, index_ic2) are statistically correlated, or to false if they are uncorrelated
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short |
has_pk_m |
do we want spectra for total matter?
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short |
has_pk_cb |
do we want spectra for cdm+baryons?
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int |
index_pk_m |
index of pk for matter (defined only when has_pk_m is TRUE)
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int |
index_pk_cb |
index of pk for cold dark matter plus baryons (defined only when has_pk_cb is TRUE
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int |
index_pk_total |
always equal to index_pk_m (always defined, useful e.g. for weak lensing spectrum)
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int |
index_pk_cluster |
equal to index_pk_cb if it exists, otherwise to index_pk_m (always defined, useful e.g. for galaxy clustering spectrum)
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int |
pk_size |
k_size = total number of pk
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short |
has_pk_matter |
do we need matter Fourier spectrum?
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int |
k_size |
k_size = total number of k values
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int |
k_size_pk |
k_size = number of k values for P(k,z) and T(k,z) output)
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double * |
k |
k[index_k] = list of k values
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double * |
ln_k |
ln_k[index_k] = list of log(k) values
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double * |
ln_tau |
log(tau) array, only needed if user wants some output at z>0, instead of only z=0. This array only covers late times, used for the output of P(k) or T(k), and matching the condition z(tau) < z_max_pk
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int |
ln_tau_size |
total number of values in this array
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int |
index_ln_tau_pk |
first index relevant for output of P(k,z) and T(k,z)
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double ** |
ln_pk_ic_l |
Matter power spectrum (linear). Depends on indices index_pk, index_ic1_ic2, index_k, index_tau as: ln_pk_ic_l[index_pk][(index_tau * pfo->k_size + index_k)* pfo->ic_ic_size + index_ic1_ic2] where index-pk labels P(k) types (m = total matter, cb = baryons+CDM), while index_ic1_ic2 labels ordered pairs (index_ic1, index_ic2) (since the primordial spectrum is symmetric in (index_ic1, index_ic2)).
- for diagonal elements (index_ic1 = index_ic2) this arrays contains ln[P(k)] where P(k) is positive by construction.
- for non-diagonal elements this arrays contains the k-dependent cosine of the correlation angle, namely P(k)_(index_ic1, index_ic2)/sqrt[P(k)_index_ic1 P(k)_index_ic2] This choice is convenient since the sign of the non-diagonal cross-correlation could be negative. For fully correlated or anti-correlated initial conditions, this non-diagonal element is independent on k, and equal to +1 or -1.
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double ** |
ddln_pk_ic_l |
second derivative of above array with respect to log(tau), for spline interpolation. So:
- for index_ic1 = index_ic, we spline ln[P(k)] vs. ln(k), which is good since this function is usually smooth.
- for non-diagonal coefficients, we spline P(k)_(index_ic1, index_ic2)/sqrt[P(k)_index_ic1 P(k)_index_ic2] vs. ln(k), which is fine since this quantity is often assumed to be constant (e.g for fully correlated/anticorrelated initial conditions) or nearly constant, and with arbitrary sign.
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double ** |
ln_pk_l |
Total matter power spectrum summed over initial conditions (linear). Only depends on indices index_pk,index_k, index_tau as: ln_pk[index_pk][index_tau * pfo->k_size + index_k]
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double ** |
ddln_pk_l |
second derivative of above array with respect to log(tau), for spline interpolation.
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double ** |
ln_pk_nl |
Total matter power spectrum summed over initial conditions (nonlinear). Only depends on indices index_pk,index_k, index_tau as: ln_pk[index_pk][index_tau * pfo->k_size + index_k]
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double ** |
ddln_pk_nl |
second derivative of above array with respect to log(tau), for spline interpolation.
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double * |
sigma8 |
sigma8[index_pk]
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int |
k_size_extra |
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int |
tau_size |
total number of k values of extrapolated k array (high k) tau_size = number of values
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double * |
tau |
tau[index_tau] = list of time values, covering all the values of the perturbation module
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double ** |
nl_corr_density |
nl_corr_density[index_pk][index_tau * ppt->k_size + index_k]
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double ** |
k_nl |
wavenumber at which non-linear corrections become important, defined differently by different non_linear_method's
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int |
index_tau_min_nl |
index of smallest value of tau at which nonlinear corrections have been computed (so, for tau<tau_min_nl, the array nl_corr_density only contains some factors 1
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int |
index_pk_eq_w |
index of w in table pk_eq_w_and_Omega
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int |
index_pk_eq_Omega_m |
index of Omega_m in table pk_eq_w_and_Omega
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int |
pk_eq_size |
number of indices in table pk_eq_w_and_Omega
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int |
pk_eq_tau_size |
number of times (and raws in table pk_eq_w_and_Omega)
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double * |
pk_eq_tau |
table of time values
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double * |
pk_eq_w_and_Omega |
table of background quantites
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double * |
pk_eq_ddw_and_ddOmega |
table of second derivatives
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short |
fourier_verbose |
amount of information written in standard output
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ErrorMsg |
error_message |
zone for writing error messages
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Include dependency graph for fourier.h:
