The Quasi-Coherent Oscillations of SS Cygni

Properties of the quasi-coherent oscillations in the extreme ultraviolet (EUV) flux of the dwarf nova SS Cygni are described, with emphasis on (1) the scaling between the period of the oscillation and the EUV flux and (2) the mean power spectra and waveforms. In addition, a quasi-coherent oscillation at \nu = 0.012 +/- 0.002 Hz (FWZI) is discovered and proposed to be the spin frequency of the white dwarf.