Class
NumCosmoBBNParthenope
Description [src]
final class NumCosmo.BBNParthenope : NumCosmo.BBN
{
/* No available fields */
}Primordial Helium from a tabulated PArthENoPE run.
Interpolates $Y_p(\omega_b, \Delta N_\mathrm{eff})$ on one of the tables
shipped with NumCosmo, selected by NcBBNParthenope:table. The tables carry
$Y_p$ only, so this model implements nc_bbn_Yp_4He() and nc_bbn_get_domain()
and nothing else.
Outside the tabulated range the model errors rather than extrapolating — see nc_bbn_check_domain(). All shipped tables cover $\omega_b \in [0.005, 0.04]$ and $\Delta N_\mathrm{eff} \in [-3, 7]$.
The interpolating splines are deserialized once per table and shared by every instance for the lifetime of the process: a fit or a Monte Carlo run creates many cosmologies, and each one carrying its own copy of the table would mean re-reading it from disk per instance.
Constructors
nc_bbn_parthenope_new
Creates a new NcBBNParthenope on the default table,
NC_BBN_PARTHENOPE_TABLE_PLANCK2017.
Functions
nc_bbn_parthenope_clear
If bbn_pn is different from NULL, decreases the reference count of
bbn_pn by one and sets *bbn_pn to NULL.
Instance methods
Methods inherited from NcBBN (8)
nc_bbn_DH
Computes the primordial Deuterium abundance $\mathrm{D}/\mathrm{H}$ predicted
for cosmo. Optional: check ncm_model_check_impl_opt() for NC_BBN_IMPL_DH first.
nc_bbn_He3H
Computes the primordial Helium-3 abundance ${}^3\mathrm{He}/\mathrm{H}$
predicted for cosmo. Optional: check ncm_model_check_impl_opt() for
%NC_BBN_IMPL_He3H first.
nc_bbn_Li7H
Computes the primordial Lithium-7 abundance ${}^7\mathrm{Li}/\mathrm{H}$
predicted for cosmo. Optional: check ncm_model_check_impl_opt() for
%NC_BBN_IMPL_Li7H first.
nc_bbn_Yp_4He
Computes the primordial Helium-4 mass fraction $Y_p$ predicted for cosmo.
nc_bbn_check_domain
Errors out unless $(wb, DNeff)$ lies inside the domain bbn reports through
nc_bbn_get_domain(). Implementations that interpolate a table call this
before evaluating: outside the table there is no prediction to give, and an
extrapolated value would be indistinguishable from a real one.
nc_bbn_free
Decreases the reference count of bbn by one.
nc_bbn_get_domain
Gets the range of $(\omega_b, \Delta N_\mathrm{eff})$ over which bbn is
defined. A model with no intrinsic range reports the widest one it accepts.
nc_bbn_ref
Increases the reference count of bbn by one.
Properties
NumCosmo.BBNParthenope:table
Which tabulation of $Y_p(\omega_b, \Delta N_\mathrm{eff})$ to interpolate.
See NcBBNParthenopeTable: the tables differ by up to 1% in $Y_p$, so this
is a physics choice, not a detail.
Properties inherited from NcmModel (9)
NumCosmoMath.Model:implementation
The implementation flags of the model class, see ncm_model_check_impl_flag().
NumCosmoMath.Model:name
The name of the model class.
NumCosmoMath.Model:nick
The nickname of the model class.
NumCosmoMath.Model:params-types
The NcmParamType of each parameter.
NumCosmoMath.Model:reparam
The reparametrization, see ncm_model_set_reparam().
NumCosmoMath.Model:scalar-params-len
The number of scalar parameters.
NumCosmoMath.Model:sparam-array
The parameter descriptions that differ from the class ones, NcmSParam keyed by
parameter index. Each one is placed by its parameter name: a description of a
parameter declared with ncm_model_class_add_removed_param() is skipped, and one of
any other unknown parameter aborts.
NumCosmoMath.Model:submodel-array
The submodels, attached at construction.
NumCosmoMath.Model:vector-params-len
The number of vector parameters (not their lengths).
Signals
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.