Alexandria 2.31.0
SDC-CH common library for the Euclid project
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CosmologicalDistances.h
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1/*
2 * Copyright (C) 2012-2021 Euclid Science Ground Segment
3 *
4 * This library is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License as published by the Free
6 * Software Foundation; either version 3.0 of the License, or (at your option)
7 * any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12 * details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this library; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
25#ifndef PHYSICSUTILS_PHYSICSUTILS_COSMOLOGICALDISTANCES_H_
26#define PHYSICSUTILS_PHYSICSUTILS_COSMOLOGICALDISTANCES_H_
27
29
30namespace Euclid {
31namespace PhysicsUtils {
32
39public:
40 virtual ~CosmologicalDistances() = default;
41
49 double hubbleDistance(const CosmologicalParameters& parameters) const;
50
58 double hubbleParameter(double z, const CosmologicalParameters& parameters) const;
59
72 double comovingDistance(double z, const CosmologicalParameters& parameters,
73 double relative_precision = 0.0000001) const;
74
82 double transverseComovingDistance(double z, const CosmologicalParameters& parameters) const;
83
91 double luminousDistance(double z, const CosmologicalParameters& parameters) const;
92
101 double distanceModulus(double z, const CosmologicalParameters& parameters) const;
102
110 double dimensionlessComovingVolumeElement(double z, const CosmologicalParameters& parameters) const;
111};
112
113} // namespace PhysicsUtils
114} // namespace Euclid
115#endif /* PHYSICSUTILS_PHYSICSUTILS_COSMOLOGICALDISTANCES_H_ */
double hubbleParameter(double z, const CosmologicalParameters &parameters) const
Returns the (unit-less) Hubble parameter E(z)
double hubbleDistance(const CosmologicalParameters &parameters) const
Get the computed Hubble distance for the cosmology.
double transverseComovingDistance(double z, const CosmologicalParameters &parameters) const
return the transverse comoving distance in [pc]
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....
double distanceModulus(double z, const CosmologicalParameters &parameters) const
return the correction for the Magnitude due to the distance: DM =5*log_10(DL/10pc)
double luminousDistance(double z, const CosmologicalParameters &parameters) const
return the luminous distance in [pc]. For z=0 the returned value is 10pc.
double dimensionlessComovingVolumeElement(double z, const CosmologicalParameters &parameters) const
return the dimensionless comoving volume element.
Model the cosmological parameters. Omega_m, Omega_lambda, Omega_k and hubble_constant....