Full band all-sky search for periodic gravitational waves in the O1 LIGO data

Abbott, B. P. and Abbott, R. and Abbott, T. D. and Acernese, F. and Ackley, K. and Bécsy, Bence and Dálya, Gergely and Frei, Zsolt and Gergely, Árpád László and Raffai, Péter and Tápai, Márton and Vasúth, Mátyás Zsolt (2017) Full band all-sky search for periodic gravitational waves in the O1 LIGO data. PHYSICAL REVIEW D, 97 (10). ISSN 2470-0010

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Abstract

We report on a new all-sky search for periodic gravitational waves in the frequency band 475-2000 Hz and with a frequency time derivative in the range of [-1.0, +0.1] x 10(-8) Hz/s. Potential signals could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. This search uses the data from Advanced LIGO's first observational run 01. No gravitational-wave signals were observed, and upper limits were placed on their strengths. For completeness, results from the separately published low-frequency search 20-475 Hz are included as well. Our lowest upper limit on worst-case (linearly polarized) strain amplitude h 0 is similar to 4 x 10(-25) near 170 Hz, while at the high end of our frequency range, we achieve a worst-case upper limit of 1.3 x 10(-24) . For a circularly polarized source (most favorable orientation), the smallest upper limit obtained is similar to 1.5 x 10(-25)

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