Advection-dominated Models of Luminous Accreting Black Holes
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Narayan, Ramesh
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https://doi.org/10.1086/177136Metadata
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Narayan, Ramesh. 1996. “Advection-Dominated Models of Luminous Accreting Black Holes.” The Astrophysical Journal 462 (May): 136. https://doi.org/10.1086/177136.Abstract
It has been found that a class of optically thin two-temperature advection-dominated accretion solutions explains many observations of low-luminosity accreting black holes. Here it is shown that these models give a satisfactory description also of higher luminosity systems, provided the viscosity parameter a is large. The models reproduce the spectra of black hole X-ray binaries in the low state and explain the transition from the low state to the high state at a critical mass accretion rate. The models also show that the X-ray/gamma-ray spectra of X-ray binaries and active galactic nuclei should be similar, as confirmed by observations.Terms of Use
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