Title

Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run

Authors

J. Aasi, California Institute of Technology
J. Abadie, California Institute of Technology
B. P. Abbott, California Institute of Technology
R. Abbott, California Institute of Technology
T. Abbott, Louisiana State University
M. R. Abernathy, California Institute of Technology
T. Accadia, Université Savoie Mont Blanc
F. Acernese, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
C. Adams, LIGO Livingston
T. Adams, Cardiff University
R. X. Adhikari, California Institute of Technology
C. Affeldt, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
M. Agathos, FOM-Institute of Subatomic Physics - NIKHEF
N. Aggarwal, LIGO, Massachusetts Institute of Technology
O. D. Aguiar, Instituto Nacional de Pesquisas Espaciais
P. Ajith, California Institute of Technology
B. Allen, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
A. Allocca, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. Amador Ceron, University of Wisconsin-Milwaukee
D. Amariutei, University of Florida
R. A. Anderson, California Institute of Technology
S. B. Anderson, California Institute of Technology
W. G. Anderson, University of Wisconsin-Milwaukee
K. Arai, California Institute of Technology
M. C. Araya, California Institute of Technology
C. Arceneaux, University of Mississippi
J. Areeda, California State University, Fullerton
S. Ast, Gottfried Wilhelm Leibniz Universität Hannover
S. M. Aston, LIGO Livingston
P. Astone, Istituto Nazionale di Fisica Nucleare - INFN
P. Aufmuth, Gottfried Wilhelm Leibniz Universität Hannover
C. Aulbert, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
L. Austin, California Institute of Technology

Document Type

Article

Publication Date

4-21-2014

Abstract

We report on an all-sky search for periodic gravitational waves in the frequency range 50-1000 Hz with the first derivative of frequency in the range -8.9 × 10-10 Hz s-1 to zero in two years of data collected during LIGO's fifth science run. Our results employ a Hough transform technique, introducing a χ2 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 h0. The most stringent upper limit from year 1 is 1.0 × 10-24 in the 158.00-158.25 Hz band. In year 2, the most stringent upper limit is 8.9 × 10-25 in the 146.50-146.75 Hz 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 'quick-look' searches in the Advanced LIGO and Virgo detector era. © 2014 IOP Publishing Ltd.

Publication Source (Journal or Book title)

Classical and Quantum Gravity

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