Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-28
Mon.Not.Roy.Astron.Soc.345:657,2003
Astronomy and Astrophysics
Astrophysics
3 pages, no figures; MNRAS, in press (with minor corrections applied)
Scientific paper
10.1046/j.1365-8711.2003.06980.x
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 \mo^2 and \mo^-1 respectively, where \mo is the mass outflow rate. The outflow momentum rate is always of order L_Edd/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.
King Andrew R.
Pounds Kenneth A.
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