| The Sudbury Neutrino Observatory (SNO) is a real-time Cerenkov radiation detector that detects 8B solar neutrinos via three interactions on a heavy water medium. In the first two phases, spanning four calendar years, the experiment recorded 2924 and 4722 candidate events, respectively.; These data sets are examined with the Lomb-Scargle periodogram to search for sinusoidal periodic time variations in the observed solar neutrino rate. In total, 7300 periods are sampled, from 2 to 3650 days. A Monte Carlo analysis is performed to statistically quantify the results and to test the sensitivity of the method. This study finds no significant periodic behavior in the solar neutrino data taken by SNO. |
