hydro::units::geometric Namespace Reference

Quantities given in terms of geometric units G = c = M_odot = 1. More...

Variables
constexpr double	neutron_mass = cgs::neutron_mass / cgs::mass_unit
	Neutron mass in G = c = M_sun = 1.0 units.
constexpr double	default_saturation_rest_mass_density
	The rest mass density of matter at the saturation point. More...
constexpr double	default_baryon_mass = cgs::atomic_mass_unit / cgs::mass_unit
	The default baryon mass in geometric units. Accepted value of atomic mass unit as expressed in solar masses Limited by precision of knowledge of solar mass.

Detailed Description

Quantities given in terms of geometric units G = c = M_odot = 1.

All quantities are given in terms of unit systems which are related exactly to SI units. The limiting factor in conversions is the poorly known value of G; which leads to large uncertainties in the relative value of SI-derived masses to the solar mass. For this reason, it is best to avoid using geometric units in calculations except where conversion is explicitly needed.

Variable Documentation

default_saturation_rest_mass_density

constexpr double hydro::units::geometric::default_saturation_rest_mass_density

constexpr

Initial value:

=
    1 / nuclear::rest_mass_density_unit *
    (nuclear::saturation_number_density * nuclear::atomic_mass_unit)

The rest mass density of matter at the saturation point.