The 2002 outburst of the microquasar XTE J1550-564
  We present results of spectral and timing analysis based on 11 RXTE PCA/HEXTE observations of the microquasar XTE J1550-564 during its last outburst in January 2002. The observed behaviour is comparable to most Black-Hole Candidates in the low/hard state. This is unlike the 1998-99 outburst, when it showed a much more complex feature, probably because of the higher luminosity. For each of the 11 observations we extracted energy spectra and power density spectra, finding typical features of a low/hard state. 
A.P. Colombo, T. Belloni, J. Homan, S. Campana (Osservatorio   Astronomico di Brera, Merate, Italy), M. van der Klis (Astron...