Black Hole Winds
A. R. King, K. A. Pounds
Abstract
We show that black holes accreting at or above the Eddington rate probably produce winds which are optically thick in the continuum, whether in quasars or X-ray binaries. The photospheric radius and outflow speed are proportional to 2 and -1 respectively, where is the mass outflow rate. The outflow momentum rate is always of order LEdd/c. Blackbody emission from these winds may provide the big blue bump in some quasars and AGN, as well as ultrasoft X-ray components in ULXs.
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