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All-sky search for periodic gravitational waves in LIGO S4 data

Abbott, B. and Abbott, R. and Adhikari, Rana X. and Agresti, J. and Anderson , S. B. and Araya, M. and Armandula, H. and Ballmer, S. and Barish, B. C. and Bhawal, B. and Billingsley, G. and Black, E. and Blackburn, K. and Bork, R. and Boschi, V. and Brown, D. A. and Busby, D. and Cardenas, L. and Cepeda, C. and Chatterji, S. and Coyne, D. and Creighton, T. D. and D'Ambrosio, E. and DeSalvo, R. and Drever, R. W. P. and Dupuis, R. J. and Ehrens, P. and Espinoza, E. and Etzel, T. and Evans, M. and Fazi, D. and Goggin, L. M. and Heefner, J. and Ivanov, A. and Kells, W. and Keppel, D. G. and King, P. and Kondrashov, V. and Kozak, D. and Lazzarini, A. and Lei, M. and Libbrecht, K. and Lindquist, P. and Mailand, K. and Mandic, V. and Marx, J. N. and Meshkov, S. and Meyers, D. and Miyakawa, O. and Nash, T. and Patel, P. and Pedraza, M. and Robertson, N. A. and Russell, P. and Samidi, M. and Sannibale, V. and Savov, P. and Sears, B. and Siemens, X. and Smith, M. R. and Sutton, P. J. and Tarallo, M. and Taylor, R. and Thorne, K. S. and Tyler, W. and Vallisneri, M. and Varvella, M. and Vass, S. and Villar, A. and Waldman, S. J. and Wallace, L. and Ward, R. and Webber, D. and Weinstein, A. J. and Whitcomb, S. E. and Willems, P. A. and Yamamoto, H. and Zhang, L. and Zweizig, J. and Mageswaran, M. and Maros, E. (2008) All-sky search for periodic gravitational waves in LIGO S4 data. Physical Review D, 77 (2). Art. No. 022001 . ISSN 0556-2821.

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We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 50–1000 Hz and with the frequency’s time derivative in the range −1×10^(−8)  Hz s^(−1) to zero. Data from the fourth LIGO science run (S4) have been used in this search. Three different semicoherent methods of transforming and summing strain power from short Fourier transforms (SFTs) of the calibrated data have been used. The first, known as StackSlide, averages normalized power from each SFT. A “weighted Hough” scheme is also developed and used, which also allows for a multi-interferometer search. The third method, known as PowerFlux, is a variant of the StackSlide method in which the power is weighted before summing. In both the weighted Hough and PowerFlux methods, the weights are chosen according to the noise and detector antenna-pattern to maximize the signal-to-noise ratio. The respective advantages and disadvantages of these methods are discussed. Observing no evidence of periodic gravitational radiation, we report upper limits; we interpret these as limits on this radiation from isolated rotating neutron stars. The best population-based upper limit with 95% confidence on the gravitational-wave strain amplitude, found for simulated sources distributed isotropically across the sky and with isotropically distributed spin axes, is 4.28×10^(−24) (near 140 Hz). Strict upper limits are also obtained for small patches on the sky for best-case and worst-case inclinations of the spin axes.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Adhikari, Rana X.0000-0002-5731-5076
Billingsley, G.0000-0002-4141-2744
Kozak, D.0000-0003-3118-8950
Libbrecht, K.0000-0002-8744-3298
Vallisneri, M.0000-0002-4162-0033
Weinstein, A. J.0000-0002-0928-6784
Zweizig, J.0000-0002-1521-3397
Additional Information:© 2008 American Physical Society. Received 11 September 2007; published 10 January 2008; publisher error corrected 29 February 2008. The authors gratefully acknowledge the support of the United States National Science Foundation for the construction and operation of the LIGO Laboratory and the Particle Physics and Astronomy Research Council of the United Kingdom, the Max-Planck-Society and the State of Niedersachsen/Germany for support of the construction and operation of the GEO600 detector. The authors also gratefully acknowledge the support of the research by these agencies and by the Australian Research Council, the Natural Sciences and Engineering Research Council of Canada, the Council of Scientific and Industrial Research of India, the Department of Science and Technology of India, the Spanish Ministerio de Educacion y Ciencia, The National Aeronautics and Space Administration, the John Simon Guggenheim Foundation, the Alexander von Humboldt Foundation, the Leverhulme Trust, the David and Lucile Packard Foundation, the Research Corporation, and the Alfred P. Sloan Foundation. This document has been assigned LIGO Laboratory Document No. LIGO-P060010-05-Z.
Funding AgencyGrant Number
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
State of Niedersachsen/GermanyUNSPECIFIED
Australian Research CouncilUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Council of Scientific and Industrial Research (India)UNSPECIFIED
Department of Science and Technology (India)UNSPECIFIED
Ministerio de Educacion y Ciencia (MEC)UNSPECIFIED
John Simon Guggenheim FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Leverhulme TrustUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
LIGO DocumentLIGO-P060010-05-Z
Classification Code:PACS: 04.80.Nn, 07.05.Kf, 95.55.Ym, 97.60.Gb
Record Number:CaltechAUTHORS:20140328-095155437
Persistent URL:
Official Citation:Abbott, B., Abbott, R., Adhikari, R., Agresti, J., Ajith, P., Allen, B., . . . Collaboration, L. S. (2008). All-sky search for periodic gravitational waves in LIGO S4 data. Physical Review D, 77(2), 022001.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44546
Deposited By: Jason Perez
Deposited On:02 Apr 2014 14:53
Last Modified:21 Nov 2017 00:47

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