Fig. 1
Geometries of the central parts of the accretion flow proposed over time. (a) Static sandwiching corona, (b) static patchy corona, (c) outflowing sandwiching corona, (d) outflowing patchy corona, (e) cold accretion disc detached from the hot flow and (f) intersecting with it, (g) hot flow with cold clumps, (h) truncated disc and hot flow with substantial cyclo-synchrotron radiation.
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