January 1997
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2 Reads
We propose a set of 33 short RXTE observations of Cir X-1 to be performed during a long monitoring observation with the OSSE instrument on Compton GRO. The combined RXTE/OSSE observations will provide the best sampled spectral information on Cir X-1 to date and will cover a very broad band. We will study the correlation between the > 50 keV emission from Cir X-1 and that at lower energies, the QPO properties as a function of orbital phase, and other variability properties as a function of orbital phase. Our observations only require a modest amount of RXTE time and are almost certain to give excellent results.