Accreting Black Holes
arXiv:1410.8132
Abstract
I outline the theory of accretion onto black holes, and its application to observed phenomena such as X-ray binaries, active galactic nuclei, tidal disruption events, and gamma-ray bursts. The dynamics as well as radiative signatures of black hole accretion depend on interactions between the relatively simple black-hole spacetime and complex radiation, plasma and magnetohydrodynamical processes in the surrounding gas. I will show how transient accretion processes could provide clues to these interactions. Larger global magnetohydrodynamic simulations as well as simulations incorporating plasma microphysics and full radiation hydrodynamics will be needed to unravel some of the current mysteries of black hole accretion.
arXiv comment18 pages, 2 figures. To be published in the proceedings of the 26th Solvay Conference on Physics: "Astrophysics and Cosmology", R. Blandford and A. Sevrin, eds., World Scientific
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