Euclid::PhysicsUtils::CosmologicalDistances Class Reference

#include <CosmologicalDistances.h>

Public Member Functions
virtual	~CosmologicalDistances ()=default
double	hubbleDistance (const CosmologicalParameters &parameters) const
	Get the computed Hubble distance for the cosmology. More...
double	hubbleParameter (double z, const CosmologicalParameters &parameters) const
	Returns the (unit-less) Hubble parameter E(z) More...
double	comovingDistance (double z, const CosmologicalParameters &parameters, double relative_precision=0.0000001) const
	return the comoving distance in [pc]. This value is obtained through a numerical integration. The relative precision of the integration can be specified and is defaulted to 0.00001%. More...
double	transverseComovingDistance (double z, const CosmologicalParameters &parameters) const
	return the transverse comoving distance in [pc] More...
double	luminousDistance (double z, const CosmologicalParameters &parameters) const
	return the luminous distance in [pc]. For z=0 the returned value is 10pc. More...
double	distanceModulus (double z, const CosmologicalParameters &parameters) const
	return the correction for the Magnitude due to the distance: DM =5*log_10(DL/10pc) More...
double	dimensionlessComovingVolumeElement (double z, const CosmologicalParameters &parameters) const
	return the dimensionless comoving volume element. More...

Detailed Description

Definition at line 38 of file CosmologicalDistances.h.

Constructor & Destructor Documentation

virtual Euclid::PhysicsUtils::CosmologicalDistances::~CosmologicalDistances ( )

virtualdefault

Member Function Documentation

double Euclid::PhysicsUtils::CosmologicalDistances::comovingDistance	(	double	z,
		const CosmologicalParameters &	parameters,
		double	relative_precision = 0.0000001
	)		const

return the comoving distance in [pc]. This value is obtained through a numerical integration. The relative precision of the integration can be specified and is defaulted to 0.00001%.

Parameters

z	The redshift for which the distance has to be computed.
parameters	The cosmological parameters the distance has to be computed for.
relative_precision	The requested precision.

Definition at line 49 of file CosmologicalDistances.cpp.

References hubbleDistance(), hubbleParameter(), Euclid::MathUtils::integrate(), Elements::isEqual(), Euclid::MathUtils::SimpsonsRule::minimal_order, and std::move().

Referenced by transverseComovingDistance().

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double Euclid::PhysicsUtils::CosmologicalDistances::dimensionlessComovingVolumeElement	(	double	z,
		const CosmologicalParameters &	parameters
	)		const

return the dimensionless comoving volume element.

Parameters

z	The redshift for which the volume element has to be computed.
parameters	The cosmological parameters the distance has to be computed for.

Definition at line 91 of file CosmologicalDistances.cpp.

References hubbleDistance(), hubbleParameter(), and transverseComovingDistance().

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double Euclid::PhysicsUtils::CosmologicalDistances::distanceModulus	(	double	z,
		const CosmologicalParameters &	parameters
	)		const

return the correction for the Magnitude due to the distance: DM =5*log_10(DL/10pc)

Parameters

z	The redshift for which the distance modulus has to be computed.
parameters	The cosmological parameters the distance has to be computed for.

Definition at line 87 of file CosmologicalDistances.cpp.

References std::log10(), and luminousDistance().

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double Euclid::PhysicsUtils::CosmologicalDistances::hubbleDistance

(

const CosmologicalParameters &

parameters

)

const

Get the computed Hubble distance for the cosmology.

Parameters

parameters

The cosmological parameters the distance has to be computed for.

Returns

the Hubble distance in [pc]

Definition at line 39 of file CosmologicalDistances.cpp.

References Euclid::PhysicsUtils::CosmologicalParameters::getHubbleConstant().

Referenced by comovingDistance(), dimensionlessComovingVolumeElement(), and transverseComovingDistance().

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double Euclid::PhysicsUtils::CosmologicalDistances::hubbleParameter	(	double	z,
		const CosmologicalParameters &	parameters
	)		const

Returns the (unit-less) Hubble parameter E(z)

Parameters

z	The redshift for which the distance has to be computed.
parameters	The cosmological parameters the distance has to be computed for.

Definition at line 43 of file CosmologicalDistances.cpp.

References Euclid::PhysicsUtils::CosmologicalParameters::getOmegaK(), Euclid::PhysicsUtils::CosmologicalParameters::getOmegaLambda(), Euclid::PhysicsUtils::CosmologicalParameters::getOmegaM(), and std::sqrt().

Referenced by comovingDistance(), and dimensionlessComovingVolumeElement().

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double Euclid::PhysicsUtils::CosmologicalDistances::luminousDistance	(	double	z,
		const CosmologicalParameters &	parameters
	)		const

return the luminous distance in [pc]. For z=0 the returned value is 10pc.

Parameters

z	The redshift for which the distance has to be computed.
parameters	The cosmological parameters the distance has to be computed for.

Definition at line 79 of file CosmologicalDistances.cpp.

References Elements::isEqual(), and transverseComovingDistance().

Referenced by distanceModulus().

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double Euclid::PhysicsUtils::CosmologicalDistances::transverseComovingDistance	(	double	z,
		const CosmologicalParameters &	parameters
	)		const

return the transverse comoving distance in [pc]

Parameters

z	The redshift for which the distance has to be computed.
parameters	The cosmological parameters the distance has to be computed for.

Definition at line 64 of file CosmologicalDistances.cpp.

References comovingDistance(), Euclid::PhysicsUtils::CosmologicalParameters::getOmegaK(), hubbleDistance(), Elements::isEqual(), std::sin(), std::sinh(), and std::sqrt().

Referenced by dimensionlessComovingVolumeElement(), and luminousDistance().

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

• PhysicsUtils/PhysicsUtils/CosmologicalDistances.h
• PhysicsUtils/src/lib/CosmologicalDistances.cpp