Accretion Disks are among the most enigmatic and (thus) interesting phenomena in Astrophysics. They can occur in vastly different situations, ranging from galaxies being swallowed by their central super-massive black holes, to a stars being consumed by a massive companion, and yet they share very similar underlying processes. I have worked on projects, trying to understand the accretion mechanism, and the nature of accretion disks close to the horizon of a black hole. For more details see:
Niayesh Afshordi 
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