OBSERVATIONS OF CIRCINUS X-1 WITH RXTE

Data accumulated with RXTE during the active state of Cir X-1 as well as during an unusually long transition from the active state to the qu iescent state are reported. The long decline from the active state all owed the source characteristics to be studied systematically as a func tion of intensity. The following results are presented: (1) spectral f its during entry into a dip clearly show absorption with partial cover ing as previously reported (Brandt et al. 1996), and (2) correlations between position in the hardness-intensity plane and the character of the power density spectrum as the source entered the quiescent state a re suggestive of Z source behavior seen in LMXB sources.