disk

The spectrum from an accretion disk, where the opacities are dominated by free-free absorption, i.e., the so-called blackbody disk model. Not correct for a disk around a neutron star.

par1	 = 	accretion rate in Eddington Luminosities

par2	 = 	central mass in solar mass units

par3	 = 	inner disk radius in gravitational (= 3  Schwarzschild) radii

par4	 = 	distance in kpc

K	 = 	cos(i)/d , where i is the inclination of the disk and d is

 	        the distance in units of 10 kpc