Discussion of the Spectrum of the Acceretion Disc

In this paper,the spectra of an accretion disc and the shape and spectral index of a black body are studied by means of the numerical method.It can be obtained from the figures in this paper that the spectrum of the accretion disc is significantly different from that by Frank et al.(1985).When v is high enough,the spectrum of the accretion disc can be considered as a single temperature accretion disc.It is good for us to take F_v∝v^4.5 to be the characteristic spectrum of the accretion disc.