An Accurate Geometric Distance to the Compact Binary SS Cygni Vindicates Accretion Disc Theory
An Accurate Geometric Distance to the Compact Binary SS Cygni Vindicates Accretion Disc Theory
Dwarf novae are white dwarfs accreting matter from a nearby red dwarf companion. Their regular outbursts are explained by a thermal-viscous instability in the accretion disc, described by the disc instability model that has since been successfully extended to other accreting systems. However, the prototypical dwarf nova, SS Cygni, presents …