All-sky search for periodic gravitational waves in the O1 LIGO data
نویسنده
چکیده
We report on an all-sky search for periodic gravitational waves in the frequency band 20–475 Hz and with a frequency time derivative in the range of 1⁄2−1.0;þ0.1 × 10−8 Hz=s. Such a signal 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 periodic gravitational wave signals were observed, and upper limits were placed on their strengths. The lowest upper limits on worst-case (linearly polarized) strain amplitude h0 are ∼4 × 10−25 near 170 Hz. For a circularly polarized source (most favorable orientation), the smallest upper limits obtained are ∼1.5 × 10−25. These upper limits refer to all sky locations and the entire range of frequency derivative values. For a population-averaged ensemble of sky locations and stellar orientations, the lowest upper limits obtained for the strain amplitude are ∼2.5 × 10−25.
منابع مشابه
First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data
We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made possible by the computing power provided by the volunteers of the Einstein@Hom...
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First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data
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Publication List ( as of July 2007
[8] The LIGO Collaboration, “Search for gravitational-wave bursts in LIGO data from the fourth science run”, arXiv:0704.0943 (submitted to Class Quant Grav) [7] F. Beauville et al., “Detailed comparison of LIGO and Virgo Inspiral Pipelines in Preparation for a Joint Search”, arXiv:gr-qc/0701027 (submitted to Class Quant Grav) [6] F. Beauville et al., “A comparison of methods for gravitational w...
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