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Report on an all-sky LIGO search for periodic gravitational waves in the S4 data

Report on an all-sky LIGO search for periodic gravitational waves in the S4 data

We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 50-1000 Hz and having a negative frequency time derivative with magnitude between zero and 10-8 Hz/s. Data from the fourth LIGO science run have been used in this search. Three different semi-coherent …