Abstract
Shuang Nan Zhang
Similar phenomena at different scales:
Black Holes, Sun, Supernovae, Galaxies and Galaxy Clusters
Many similar phenomena occur in astrophysical systems with spatial and mass scales different by many orders of magnitudes. In this talk I will summarize briefly these phenomena and possible physical mechanisms responsible for them. I will emphasize the importance of using the Sun as an astrophysical laboratory in studying some of these physical processes, especially the roles magnetic field plays in them; it is quite likely that magnetic reconnections dominate the fundamental energy release processes in all these systems. As a case study, I will show that X-ray light curves from solar flares, black hole binaries and gamma-ray bursts exhibit a common scaling law of non-linear dynamical property, over a dynamical range of many orders of magnitudes in intensities, in support of self-organized criticality mechanisms operating in their energy release processes.
