No QPO time lags from Sco X-1 as seen with EXOSAT: a comparison with Cyg X-2

Stefan W. Dieters, Brian A. Vaughan, Erik Kuulkers +2

We have measured the phase-delay and rms amplitude spectra of CygX-2 and ScoX-1. Using EXOSAT data from the normal branch of CygX-2 we confirm earlier (Ginga) results, showing that…