NFW_Utility Class Reference

Class for calculating properties of NFW halo profile. More...

#include <cosmo.h>

Public Member Functions
double	NFW_V200 (double M200, double R200)
	Circular velocity at R200 in km/s.
double	NFW_Vmax (double cons, double M200, double R200)
	Maximum circular velocity in km/s.
double	NFW_Vr (double x, double cons, double M200, double R200)
	Circular velocity in km/s.
double	NFW_M (double x, double cons, double M200)
	Mass within a radius x in Msun.
double	NFW_deltac (double cons)
	central over-density of nfw halo
double	NFW_Concentration (double Vmax, double M200, double R200)
	Concentration of NFW given Vmax in km/s.
double	NFW_rho (double cons, double x)
	The density of an NFW profile in units of the critical density.
void	match_nfw (float Vmax, float R_half, float mass, float *cons, float *Rsize)
	Returns the concentration and radius of an NFW halo with the mass, half mass radius and Vmax provided.
float	Rsize (float cons, float Vmax, float mass)
float	g_func (float x)

Detailed Description

Class for calculating properties of NFW halo profile.

This class does not take into affect the cosmological correlation between concentration and mass. For this see the HALOCalculator class.

Member Function Documentation

match_nfw()

void NFW_Utility::match_nfw	(	float	my_Vmax,
		float	my_R_half,
		float	my_mass,
		float *	my_cons,
		float *	my_Rsize )

Returns the concentration and radius of an NFW halo with the mass, half mass radius and Vmax provided.

Parameters

my_Vmax	Maximum circular velocity (km/s)
my_R_half	Half mass radius (Mpc)
my_mass	Mass (solar masses)
my_cons	output concentration
my_Rsize	Radius of halo, Not necessarily R200 or Rvir.

NFW_Concentration()

double NFW_Utility::NFW_Concentration	(	double	Vmax,
		double	M200,
		double	R200 )

Concentration of NFW given Vmax in km/s.

Parameters

Vmax	Maximum circular velocity
M200	Mass
R200	Radius

NFW_deltac()

double NFW_Utility::NFW_deltac

(

double

cons

)

central over-density of nfw halo

Parameters

cons	concentration = R_200/R_s

NFW_M()

double NFW_Utility::NFW_M	(	double	x,
		double	cons,
		double	M200 )

Mass within a radius x in Msun.

Parameters

x	radius , r/R_200
cons	concentration = R_200/R_s
M200	Mass

NFW_rho()

double NFW_Utility::NFW_rho	(	double	cons,
		double	x )

The density of an NFW profile in units of the critical density.

Parameters

cons	concentration = R_200/R_s
x	radius , r/R_200

NFW_V200()

double NFW_Utility::NFW_V200	(	double	M200,
		double	R200 )

Circular velocity at R200 in km/s.

Parameters

M200	Mass
R200	Radius

NFW_Vmax()

double NFW_Utility::NFW_Vmax	(	double	cons,
		double	M200,
		double	R200 )

Maximum circular velocity in km/s.

Parameters

cons	concentration = R_200/R_s
M200	Mass
R200	Radius

NFW_Vr()

double NFW_Utility::NFW_Vr	(	double	x,
		double	cons,
		double	M200,
		double	R200 )

Circular velocity in km/s.

Parameters

x	radius , r/R_200
cons	concentration = R_200/R_s
M200	Mass
R200	Radius

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

• CosmoLib/include/cosmo.h
• CosmoLib/nfw.cpp