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  An Einstein@home search for continuous gravitational waves from Cassiopeia A

Zhu, S. J., Papa, M. A., Eggenstein, H.-B., Prix, R., Wette, K., Allen, B., et al. (2016). An Einstein@home search for continuous gravitational waves from Cassiopeia A. Physical Review D, 94: 082008. doi:10.1103/PhysRevD.94.082008.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-5D00-C Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E3BD-A
Genre: Journal Article

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 Creators:
Zhu, Sylvia J.1, Author
Papa, Maria Alessandra2, 3, Author              
Eggenstein, H.-B.3, Author              
Prix, Reinhard1, 3, Author              
Wette, Karl1, Author              
Allen, Bruce1, Author              
Bock, Oliver1, Author              
Keitel, David4, Author              
Krishnan, Badri5, Author              
Machenschalk, Bernd1, 3, Author              
Shaltev, Miroslav1, Author              
Siemens, Xavier, Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24011              
2Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:1933290              
3Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:2630691              
4Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24010              
5Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
 Abstract: We report the results of a directed search for continuous gravitational-wave emission in a broad frequency range (between 50 and 1000 Hz) from the central compact object of the supernova remnant Cassiopeia A (Cas A). The data comes from the sixth science run of LIGO and the search is performed on the volunteer distributed computing network Einstein@Home. We find no significant signal candidate, and set the most constraining upper limits to date on the gravitational-wave emission from Cas A, which beat the indirect age-based upper limit across the entire search range. At around 170 Hz (the most sensitive frequency range), we set 90% confidence upper limits on the gravitational wave amplitude $h_0$ of $\sim\!\!~2.9\times 10^{-25}$, roughly twice as constraining as the upper limits from previous searches on Cas A. The upper limits can also be expressed as constraints on the ellipticity of Cas A; with a few reasonable assumptions, we show that at gravitational-wave frequencies greater than 300~Hz, we can exclude an ellipticity of $\gtrsim\!\!~10^{-5}$.

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 Dates: 2016-08-262016-09-272016
 Publication Status: Published in print
 Pages: 29 pages, 7 figures, 3 tables
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1608.07589
DOI: 10.1103/PhysRevD.94.082008
URI: http://arxiv.org/abs/1608.07589
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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: 082008 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/111088197762258