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Kwak, Kyujin
Computational Astrophysics Lab
Research Interests
  • Computational Fluid Dynamics
  • Astrophysical and Laboratory Plasma
  • Hydrodynamics with Radiation
  • Nuclear, Atomic, and Molecular Reactions

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All-sky search for continuous gravitational waves from isolated neutron stars in the early O3 LIGO data

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dc.contributor.author Abbott, R ko
dc.contributor.author Kwak, K ko
dc.contributor.author Ha, S ko
dc.contributor.author Jung, K ko
dc.contributor.author Kim, Y-M ko
dc.contributor.author Lin, L. C-C ko
dc.date.available 2021-11-18T08:42:09Z -
dc.date.created 2021-11-15 ko
dc.date.issued 2021-10 ko
dc.identifier.citation PHYSICAL REVIEW D, v.104, no.8, pp.082004 ko
dc.identifier.issn 2470-0010 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/54814 -
dc.description.abstract We report on an all-sky search for continuous gravitational waves in the frequency band 20-2000 Hz and with a frequency time derivative in the range of [-1.0; +0.1] x 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 LIGO data from the first six months of Advanced LIGO's and Advanced Virgo's third observational run, O3. No periodic gravitational wave signals are observed, and 95% confidence-level (C.L.) frequentist upper limits are placed on their strengths. The lowest upper limits on worst-case (linearly polarized) strain amplitude h(0) are similar to 1.7 x 10(-25) near 200 Hz. For a circularly polarized source (most favorable orientation), the lowest upper limits are similar to 6.3 x 10(-26). These strict frequentist upper limits refer to all sky locations and the entire range of frequency derivative values. For a populationaveraged ensemble of sky locations and stellar orientations, the lowest 95% C.L. upper limits on the strain amplitude are similar to 1.4 x 10(-25). These upper limits improve upon our previously published all-sky results, with the greatest improvement (factor of similar to 2) seen at higher frequencies, in part because quantum squeezing has dramatically improved the detector noise level relative to the second observational run, O2. These limits are the most constraining to date over most of the parameter space searched. ko
dc.language 영어 ko
dc.publisher AMER PHYSICAL SOC ko
dc.title All-sky search for continuous gravitational waves from isolated neutron stars in the early O3 LIGO data ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85117203483 ko
dc.identifier.wosid 000705647300001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1103/PhysRevD.104.082004 ko
dc.identifier.url https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.082004 ko
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