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An accreting system in two-temperature regime, admits multiple solutions forthe same set of constants of motion, producing widely different spectra.Comparing observed spectrum with that derived from a randomly chosen accretionsolution, will give us a wrong estimation of the accretion parameters of thesystem. The form of entropy measure obtained by us, have helped in removing thedegeneracy of the solutions, allowing us to understand the physics of thesystem, shorn of arbitrary assumptions. In this work, we have shown how thespectra and luminosities of an accreting system depends on the constants ofmotion, producing solutions ranging from radiatively inefficient flows toluminous flows. Increase in BH mass quantitatively changes the system, makesthe system more luminous and the spectral bandwidth also increases. Higher BHmass system spans from radio to gamma-rays. However, increasing the accretionrate around a BH of certain mass, has little influence in the frequency rangeof the spectra.

Two temperature solutions and emergent spectra from relativistic accretion discs around black holes