Code has been developed to search for periodic signals using the parallel computers available at Caltech. This algorithm was applied to data from the 40-meter prototype interferometer. The search strategy used involve coherent accumulation of data from the interferometer over a long period of time. Frequency shifting due to the motion of the earth and spindown of the pulsars are effects that must be taken into consideration. Results from a search for known pulsars will be presented.
Further work is required in order to expand the search to unknown pulsars.
Walid A. Majid ROOT, an interactive object-oriented data analysis framework developed at CERN, has been selected as a candidate LIGO data analysis tool. Since ROOT, however, was not initially intended for gravitational data analysis, additional signal processing tools were needed. Our goal was to develop these signal-processing tools in the ROOT environment. Currently we are developing Line Removal techniques, a process that removes a narrow frequency band and its harmonics from a given data set. When its development is completed, it will be used as part of the LIGO data analysis package.