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cst Namespace Reference

Namespace contaning all the constants. More...

Variables
const double	mpc2 = 938.2
	Proton Rest Mass (MeV).
const double	mec2 = 0.510999
	Electron Rest Mass (MeV).
const double	erg2MeV = 624151.0
	Conversion fron erg to MeV.
const double	mpc2cm = 3.0857e+24
	Conversion fron Mpc to cm.
const double	st = 6.65225e-25
	Thompson cross section ( ).
const double	mu0 = 4.0*M_PI*1.0e-7
	Magnetic permeability in .
const double	BQ = 4.413e+13
	Reference value for the magnetic field Gauss.
const double	c = 2.98e+10
	Speed of light in .
const double	c2 = c*c
	Square of the speed of light.
const double	hplanck = 4.13567e-15
	Planck constant in eV*sec.
const double	pi = 3.1415926535897932385
	.
const double	Hubble = 6.5e+1
	Hobble`s constant in .
const double	wzel = 0.0
	w Zeldovich.
const double	csi = 1.0
	Scale factor, indicates the ratio of accelerated electrons.
const double	alphae = .5
	Part of the internal energies that goes in electrons.
const double	alphab = .1
	Part of the internal energies that goes in magnetic fiels.
const double	p = 2.5
	The shock accelerate electron with a power low energy disptribution: .
const double	viscosity = 0.0
	Viscosity of the circum burst material.
const int	nstep = 300
	Number of time steps.
const int	enstep = 50
	Number of energy steps.
const double	enmin = 1.0e+3
	Minimum energy at which the simulator will compute the flux.
const double	enmax = 1.0e+12
	Maximum energy at which the simulator will compute the flux.
const float	flagIC = 1
const bool	flagQG = false
	Flag to compute the Quantum Gravity Effect. More...
const bool	savef = false
const std::string	paramFile = "GRBdata.txt"
	Name of the output file.
const std::string	pulse_shape = "agauss"

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Detailed Description

Namespace contaning all the constants.

In this namespace are stored all the constants needed by the GRB Physical simulator. The constants contained here usually should not be changed by a general user.

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Variable Documentation

const float cst::flagIC = 1

Compton Scattering calculation This constant give an estimation of how Compton scattering will partecipate to the spectrum. flagIC has to be in the interval [0,1], if ==0, no inverse compton will be calculated. If == 1 the IC effect is calculated tacking into account the optical depht of the shell. See also: GRBSynchrotron, GRBICompton, GRBSim

const bool cst::flagQG = false

Flag to compute the Quantum Gravity Effect. Quantum gravity, if present, will calculate the dispersion low on the arrival time for the photons depending on thei energies. See also: RadiationProcess::timeShiftForDispersion()

const std::string cst::pulse_shape = "agauss"

Indicates the pulse shape Different pulse shape are considered. The pulse shape depends on how the particle are accelerated in a shock as function of time. sgauss = Simmetric pulse shape. It is a double exponential with the two characteristic time equal to the cooling time of the radiative process. No intrinsic delay (or 'lag' has been considered between different energies. agauss = asimmetric exponential function, the rise time and the decay time are different. The peak time depend on the energy, and this give up a delay between high energies and low energies. -else . any other choiche set up a default function expressed by a FRED like function. A Fast Rise pulse followed by an Exponential Decay. See also: RadiationProcess::electronNumber

const bool cst::savef = false

Flag for saving in output file If true it save into an output file. It is needed by GRBROOTtest.cxx

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