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Direct observational upper limit to gravitational radiation from millisecond pulsar PSR1937 + 214

Hough, J. and Drever, R. W. P. and Ward, H. and Munley, A. J. and Newton, G. P. and Meers, B. J. and Hoggan, S. and Kerr, G. A. (1983) Direct observational upper limit to gravitational radiation from millisecond pulsar PSR1937 + 214. Nature, 303 (5914). pp. 216-217. ISSN 0028-0836. doi:10.1038/303216a0.

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The newly discovered millisecond pulsar PSR1937 + 214 has such a high rotational rate, 642 Hz, that any significant quadrupole moment not aligned with the spin axis could lead to a large flux of gravitational radiation. Although recently reported slowdown rates suggest an energy loss corresponding to a currently unobservable level of gravitational radiation, existing evidence may not completely rule out all possibilities for production of detectable gravitational waves. For example, continuing accretion might provide additional energy for gravitational radiation; and it may not be impossible that the pulsar might be closer to the Earth than indicated by the dispersion measure if there was large local dispersion. Overall, the parameters of this pulsar seem so exceptional that a direct search for gravitational radiation with existing equipment seemed worth making. We describe here such a search that has set an upper limit to gravitational wave amplitude at twice the pulsar rotation frequency, the observed output from a gravitational wave detector corresponding at this frequency to an amplitude of (0.8^(+1.5) _(−0.8)) × 10^(−20).

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Additional Information:© 1983 Macmillan Journals Ltd. Received 25 February; accepted 31 March 1983. We thank Dr A.G. Lyne for providing advance data on the pulsar period from Jodrell Bank observations, also Dr J. D. H. Pilkington and staff of R.G.O., Herstmonceaux, for information on precision of received MSF standard frequency transmissions. The work at Glasgow is supported by SERC and the University of Glasgow.
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Science and Engineering Research Council (SERC)UNSPECIFIED
University of GlasgowUNSPECIFIED
Issue or Number:5914
Record Number:CaltechAUTHORS:20151224-103248735
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ID Code:63230
Deposited On:24 Dec 2015 19:16
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