Limits on gravitational wave emission from selected pulsars using LIGO data

Details Limits on gravitational wave emission from selected pulsars using LIGO data Limits on gravitational wave emission from selected pulsars using LIGO data

2004-10-01

arxiv.org/abs/gr-qc/0410007v2

Phys.Rev.Lett.94:181103,2005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.94.181103

We place direct upper limits on the amplitude of gravitational waves from 28 isolated radio pulsars by a coherent multi-detector analysis of the data collected during the second science run of the LIGO interferometric detectors. These are the first direct upper limits for 26 of the 28 pulsars. We use coordinated radio observations for the first time to build radio-guided phase templates for the expected gravitational wave signals. The unprecedented sensitivity of the detectors allow us to set strain upper limits as low as a few times $10^{-24}$. These strain limits translate into limits on the equatorial ellipticities of the pulsars, which are smaller than $10^{-5}$ for the four closest pulsars.

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