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]×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 O1. 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 h0 is ∼4×10-25 near 170 Hz, while at the high end of our frequency range, we achieve a worst-case upper limit of 1.3×10-24. For a circularly polarized source (most favorable orientation), the smallest upper limit obtained is ∼1.5×10-25.

Full band all-sky search for periodic gravitational waves in the O1 LIGO data / DE PIETRI, Roberto. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 97:10(2018). [10.1103/PhysRevD.97.102003]

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

roberto de Pietri
2018-01-01

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]×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 O1. 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 h0 is ∼4×10-25 near 170 Hz, while at the high end of our frequency range, we achieve a worst-case upper limit of 1.3×10-24. For a circularly polarized source (most favorable orientation), the smallest upper limit obtained is ∼1.5×10-25.
2018
Full band all-sky search for periodic gravitational waves in the O1 LIGO data / DE PIETRI, Roberto. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 97:10(2018). [10.1103/PhysRevD.97.102003]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2851305
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