constants.h

/* == Definition of constants in CGS units == */

/* stripped to include only constants that are used. */

#define EE			(4.80320680e-10		)	/* electron charge */
#define CL			(2.99792458e10		)	/* speed of light */
#define ME			(9.1093826e-28		)	/* electron mass */
#define MP			(1.67262171e-24		)	/* proton mass */
#define HPL			(6.6260693e-27		)	/* Planck constant */
#define KBOL			(1.3806505e-16		)	/* Boltzmann constant */
#define GNEWT			(6.6742e-8		)	/* Gravitational constant */

#define HBAR			(HPL/(2.*M_PI)		)	/* Planck's consant / 2pi */
#define SIG			(5.670400e-5		)	/* Stefan-Boltzmann constant */
#define SIGMA_THOMSON		(0.665245873e-24	)	/* Thomson cross section in cm^2 */
#define JY			(1.e-23			)	/* Jansky (flux/freq. unit) in cgs */
#define PC			(3.085678e18		)	/* parsec */
#define MSUN			(1.989e33		)	/* solar mass */
#define LSUN                    (3.827e33               ) 	/* Luminousity of Sun */
#define YEAR                    (31536000.              ) 	/* No. of seconds in year */