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Application of a Hough Search for Continuous Gravitational Waves on Data from the Fifth LIGO Science RunWe report on an all-sky search for periodic gravitational waves in the frequency range 50-1000 Hertz with the first derivative of frequency in the range −8.9 × 10(exp −10) Hertz per second to zero in two years of data collected during LIGO's fifth science run. Our results employ a Hough transform technique, introducing a chi(sup 2) test and analysis of coincidences between the signal levels in years 1 and 2 of observations that offers a significant improvement in the product of strain sensitivity with compute cycles per data sample compared to previously published searches. Since our search yields no surviving candidates, we present results taking the form of frequency dependent, 95% confidence upper limits on the strain amplitude h(sub 0). The most stringent upper limit from year 1 is 1.0 × 10(exp −24) in the 158.00-158.25 Hertz band. In year 2, the most stringent upper limit is 8.9 × 10(exp −25) in the 146.50-146.75 Hertz band. This improved detection pipeline, which is computationally efficient by at least two orders of magnitude better than our flagship Einstein@Home search, will be important for 'quicklook' searches in the Advanced LIGO and Virgo detector era.
Document ID
20140017793
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Aasi, J.
(California Inst. of Tech. Pasadena, CA, United States)
Abadie, J.
(California Inst. of Tech. Pasadena, CA, United States)
Abbott, B. P.
(California Inst. of Tech. Pasadena, CA, United States)
Abbott, R.
(California Inst. of Tech. Pasadena, CA, United States)
Abbott, T.
(Louisiana State Univ. Baton Rouge, LA, United States)
Abernathy, M. R.
(California Inst. of Tech. Pasadena, CA, United States)
Accadia, T.
(Grenoble-1 Univ. Annecy, France)
Adams, C.
(LIGO Livingston Observatory Livingston, LA, United States)
Adams, T.
(Cardiff Univ. United Kingdom)
Adhikari, R. X.
(California Inst. of Tech. Pasadena, CA, United States)
Affeldt, C.
(Max-Planck-Inst. fuer Gravitationsphysik, Albert-Einstein-Institut Golm, Germany)
Agathos, M.
(Institute for Atomic and Molecular Physics Amsterdam, Netherlands)
Aggarwal, N.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Aguiar, O. D.
(Instituto de Pesquisas Espaciais Sao Jose dos Campos, Brazil)
Ajith, P.
(California Inst. of Tech. Pasadena, CA, United States)
Allen, B.
(Max-Planck-Inst. fuer Gravitationsphysik, Albert-Einstein-Institut Golm, Germany)
Allocca, A.
(Istituto Nazionale di Fisica Nucleare Pisa, Italy)
Ceron, E. A.
(Wisconsin Univ. Milwaukee, WI, United States)
Amariutei, D.
(Florida Univ. Gainesville, FL, United States)
Anderson, R. A.
(California Inst. of Tech. Pasadena, CA, United States)
Blackburn, L.
(Maryland Univ. College Park, MD, United States)
Camp, J. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gehrels, N.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Graff, P. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kanner, J. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
December 30, 2014
Publication Date
April 21, 2014
Publication Information
Publication: Classical and Quantum Gravity Journal
Publisher: IOP Science
Volume: 31
Issue: 8
Subject Category
Astronomy
Astrophysics
Report/Patent Number
LIGO-P1300071
GSFC-E-DAA-TN15368
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
neutron stars
LIGO
gravitational waves
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