Time dependent models of the winds show lots of structure:
turbulence, shock waves, collisions between ÒcloudsÓ
This chaotic behavior is predicted to produce X-rays through
shock-heating of some small fraction of the wind.
The wind structure - and
associated shock heating -
is generated by the line-
force instability, which
relies on Doppler
deshadowing of
radiatively-driven ions to
increase the radiative
driving in an
exponentially growing
feedback process.