Cosmology Class Reference

#include <Cosmology.hpp>

Inheritance diagram for Cosmology:

Public Member Functions
virtual double	angularDiameterDistance () const =0
virtual double	luminosityDistance () const =0
virtual double	modelRedshift () const =0
virtual double	relativeExpansionRate () const =0
Public Member Functions inherited from SimulationItem
template<class T >
T *	find (bool setup=true) const
template<class T >
T *	interface (int levels=-999999, bool setup=true) const
virtual string	itemName () const
void	setup ()
string	typeAndName () const
Public Member Functions inherited from Item
	Item (const Item &)=delete
virtual	~Item ()
void	addChild (Item *child)
const vector< Item * > &	children () const
virtual void	clearItemListProperty (const PropertyDef *property)
void	destroyChild (Item *child)
virtual bool	getBoolProperty (const PropertyDef *property) const
virtual vector< double >	getDoubleListProperty (const PropertyDef *property) const
virtual double	getDoubleProperty (const PropertyDef *property) const
virtual string	getEnumProperty (const PropertyDef *property) const
virtual int	getIntProperty (const PropertyDef *property) const
virtual vector< Item * >	getItemListProperty (const PropertyDef *property) const
virtual Item *	getItemProperty (const PropertyDef *property) const
virtual string	getStringProperty (const PropertyDef *property) const
int	getUtilityProperty (string name) const
virtual void	insertIntoItemListProperty (const PropertyDef *property, int index, Item *item)
Item &	operator= (const Item &)=delete
Item *	parent () const
virtual void	removeFromItemListProperty (const PropertyDef *property, int index)
virtual void	setBoolProperty (const PropertyDef *property, bool value)
virtual void	setDoubleListProperty (const PropertyDef *property, vector< double > value)
virtual void	setDoubleProperty (const PropertyDef *property, double value)
virtual void	setEnumProperty (const PropertyDef *property, string value)
virtual void	setIntProperty (const PropertyDef *property, int value)
virtual void	setItemProperty (const PropertyDef *property, Item *item)
virtual void	setStringProperty (const PropertyDef *property, string value)
void	setUtilityProperty (string name, int value)
virtual string	type () const

Protected Member Functions
	Cosmology ()
Protected Member Functions inherited from SimulationItem
	SimulationItem ()
virtual bool	offersInterface (const std::type_info &interfaceTypeInfo) const
virtual void	setupSelfAfter ()
virtual void	setupSelfBefore ()
Protected Member Functions inherited from Item
	Item ()

Private Types
using	BaseType = SimulationItem
using	ItemType = Cosmology

Friends
class	ItemRegistry

Detailed Description

An instance of a Cosmology subclass specifies the cosmology related parameters of the simulated model, including the redshift at which the model coordinate frame is assumed to reside, as well as the spatial geometry and expansion behavior of the universe.

Constructor & Destructor Documentation

Cosmology()

Cosmology::Cosmology ( )

inlineprotected

Default constructor for abstract Item subclass Cosmology : "a set of cosmology parameters, including redshift" .

Member Function Documentation

angularDiameterDistance()

virtual double Cosmology::angularDiameterDistance ( ) const

pure virtual

This function returns the angular-diameter distance $d_{\mathrm{A}}(z)$, which converts a proper transverse separation $\mathrm{d}l$ to the corresponding observed angular separation $\mathrm{d}\psi$,

$$\mathrm{d}\psi =\frac{\mathrm{d}l}{d_{\mathrm{A}}(z)}.$$

Implemented in FlatUniverseCosmology, and LocalUniverseCosmology.

luminosityDistance()

virtual double Cosmology::luminosityDistance ( ) const

pure virtual

This function returns the luminosity distance, which converts a total luminosity $L_{\mathrm{t}\mathrm{o}\mathrm{t}}$ to the corresponding observed total flux $F_{\mathrm{t}\mathrm{o}\mathrm{t}}$,

$$F_{\mathrm{t}\mathrm{o}\mathrm{t}}=\frac{L_{\mathrm{t}\mathrm{o}\mathrm{t}}}{4\pi d_{\mathrm{L}}^2(z)}$$

or a neutral-style monochromatic luminosity $\lambda L_{\lambda }$ to the corresponding observed neutral-style flux,

$$(1+z)\lambda F_{\lambda }[(1+z)\lambda ]=\frac{\lambda L_{\lambda }[\lambda ]}{4\pi d_{\mathrm{L}}^2(z)}$$

where $\lambda$ is the emitted wavelength and $(1+z)\lambda$ is the observed wavelength.

Implemented in FlatUniverseCosmology, and LocalUniverseCosmology.

modelRedshift()

virtual double Cosmology::modelRedshift ( ) const

pure virtual

This function returns the redshift at which the model resides, or zero if it resides in the Local Universe.

Implemented in FlatUniverseCosmology, and LocalUniverseCosmology.

relativeExpansionRate()

virtual double Cosmology::relativeExpansionRate ( ) const

pure virtual

This function returns the relative expansion rate of the universe, $\dot{a}/a$, where $a$ is the dimensionless scale factor. The relative expansion rate has units of ${\mathrm{s}}^{-1}$.

Implemented in FlatUniverseCosmology, and LocalUniverseCosmology.

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The documentation for this class was generated from the following file:

• Cosmology.hpp