Upper limits on gravitational wave emission from 78 radio pulsars

Details Upper limits on gravitational wave emission from 78 radio pulsars Upper limits on gravitational wave emission from 78 radio pulsars

2007-02-07

arxiv.org/abs/gr-qc/0702039v5

Phys.Rev.D76:042001,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

21 pages, published in Phys. Rev. D, corrected GEO600 sensitvity curve in Figure 1

Scientific paper

10.1103/PhysRevD.76.042001

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 GEO600 gravitational wave detectors. The data from both runs have been combined coherently to maximise 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 2.6e-25 for PSRJ1603-7202, and the equatorial ellipticity of PSRJ2124-3358 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.

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