At its core, three key overarching themes govern my research: (1) through targeted (multi-waveband) studies of individual efficient accretion systems associated with neutron stars and stellar and supermassive black holes, I focus on understanding the physics and dynamics driving the hottest regions most central to the compact object to get at solutions to BH spin and/or the sensitive relationship between accretion disk behavior and jet over many magnitude differences in  mass scales.  (2) In parallel, these systems can be used as illumination sources for high opacity material...