Studies of Hard X-ray Tails in Z sources with RXTE/HEXTE

F. D'Amico, W. A. Heindl, R. E. Rothschild +1

We report RXTE results of spectral analyses of three (Sco X-1, GX 349+2, and Cyg X-2) out of the 6 known Z sources, with emphasis in the hard X-ray emission. No hard X-ray tails we…