Abstract

The black hole binary LMC X-3 exhibits long term intensity variations of a factor of several hundred, with a characteristic time scale of about one hundred days. Presumed to be periodic based on HEAO-1 A2 data (Cowley et al.), RXTE/ASM data reveal a mor

LMC X-3 has been monitored with the PCA for a substantial fraction of the RXTE mission. From this well-sampled data set, we present the long term variations in spectral parameters during AO-1. The RXTE archive includes two dedicated blocks of observati