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  Hierarchical follow-up of sub-threshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data

Papa, M. A., Eggenstein, H.-B., Walsh, S., Di Palma, I., Allen, B., Astone, P., et al. (2016). Hierarchical follow-up of sub-threshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data. Physical Review D, 94: 122006. doi:10.1103/PhysRevD.94.032006.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-39BA-E Version Permalink: http://hdl.handle.net/21.11116/0000-0002-F99C-6
Genre: Journal Article

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 Creators:
Papa, Maria Alessandra1, 2, 3, Author              
Eggenstein, Heinz-Bernd3, Author              
Walsh, Sinéad, Author
Di Palma, Irene4, Author              
Allen, Bruce4, Author              
Astone, Pia, Author
Bock, Oliver4, Author              
Creighton, Teviet D., Author
Keitel, David5, Author              
Machenschalk, Bernd3, 4, Author              
Prix, Reinhard3, 4, Author              
Siemens, Xavier, Author
Singh, Avneet1, 3, Author              
Zhu, Sylvia1, 3, Author              
Schutz, Bernard F.6, Author              
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              
2AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24009              
3Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_2630691              
4Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              
5Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
6Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We report results of an all-sky search for periodic gravitational waves with frequency between 50 and 510 Hz from isolated compact objects, i.e. neutron stars. A new hierarchical multi-stage approach is taken, supported by the computing power of the Einstein@Home project, allowing to probe more deeply than ever before. 16 million sub-threshold candidates from the initial search [LVC,arXiv:1606.09619] are followed up in three stages. None of those candidates is consistent with an isolated gravitational wave emitter, and 90% confidence level upper limits are placed on the amplitudes of continuous waves from the target population. Between 170.5 and 171 Hz we set the most constraining 90% confidence upper limit on the strain amplitude h0 at 4.3x10-25 , while at the high end of our frequency range we achieve an upper limit of 7.6x10-25. These are the most constraining all-sky upper limits to date and constrain the ellipticity of rotating compact objects emitting at 300 Hz at a distance D to less than 6x10-7 [d/100pc].

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 Dates: 2016-08-312016
 Publication Status: Published in print
 Pages: 14 pages, 11 figures, extensive tables in the appendixes on pages 10-13
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1608.08928
DOI: 10.1103/PhysRevD.94.032006
URI: http://arxiv.org/abs/1608.08928
 Degree: -

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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 94 Sequence Number: 122006 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258