A Systematic Search for Periodicities in RXTE/ASM Data
  We present the results of a systematic search in 8.5 years of Rossi X-ray Timing Explorer All-Sky Monitor data for evidence of periodicities. The search was conducted by application of the Lomb-Scargle periodogram to the light curves of each of 458 actually or potentially detected sources in each of four energy bands (1.5-3 keV, 3-5 keV, 5-12 keV, and 1.5-12 keV). A whitening technique was applied to the periodograms before evaluation of the statistical significance of the powers. We discuss individual detections with focus on relatively new findings. 
Linqing Wen (AEI, Germany), Alan M. Levine (MIT), Robin H. D. Corbet   (USRA, GSFC), and Hale V. Bradt (MIT)