Title

Upper limits on gravitational wave emission from 78 radio pulsars

Authors

B. Abbott, California Institute of Technology
R. Abbott, California Institute of Technology
R. Adhikari, California Institute of Technology
J. Agresti, California Institute of Technology
P. Ajith, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
B. Allen, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
R. Amin, Louisiana State University
S. B. Anderson, California Institute of Technology
W. G. Anderson, University of Wisconsin-Milwaukee
M. Arain, University of Florida
M. Araya, California Institute of Technology
H. Armandula, California Institute of Technology
M. Ashley, The Australian National University
S. Aston, University of Birmingham
P. Aufmuth, Gottfried Wilhelm Leibniz Universität Hannover
C. Aulbert, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
S. Babak, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
S. Ballmer, California Institute of Technology
H. Bantilan, Carleton College, USA
B. C. Barish, California Institute of Technology
C. Barker, LIGO Hanford
D. Barker, LIGO Hanford
B. Barr, University of Glasgow
P. Barriga, The University of Western Australia
M. A. Barton, University of Glasgow
K. Bayer, Massachusetts Institute of Technology
K. Belczynski, Northwestern University
J. Betzwieser, Massachusetts Institute of Technology
P. T. Beyersdorf, San Jose State University
B. Bhawal, California Institute of Technology
I. A. Bilenko, Lomonosov Moscow State University
G. Billingsley, California Institute of Technology
R. Biswas, University of Wisconsin-Milwaukee

Document Type

Article

Publication Date

8-3-2007

Abstract

We present upper limits on the gravitational wave emission from 78 radio pulsars based on data from the third and fourth science runs of the LIGO and GEO 600 gravitational wave detectors. The data from both runs have been combined coherently to maximize sensitivity. For the first time, pulsars within binary (or multiple) systems have been included in the search by taking into account the signal modulation due to their orbits. Our upper limits are therefore the first measured for 56 of these pulsars. For the remaining 22, our results improve on previous upper limits by up to a factor of 10. For example, our tightest upper limit on the gravitational strain is 2.6×10-25 for PSR J1603-7202, and the equatorial ellipticity of PSR J2124-3358 is less than 10-6. Furthermore, our strain upper limit for the Crab pulsar is only 2.2 times greater than the fiducial spin-down limit. © 2007 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review D - Particles, Fields, Gravitation and Cosmology

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