Revised estimate of gravitational radiation from Crab and VELA pulsars

Details Revised estimate of gravitational radiation from Crab and VELA pulsars Revised estimate of gravitational radiation from Crab and VELA pulsars

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.271..524z&link_type=abstract

Nature, vol. 271, Feb. 9, 1978, p. 524, 525.

Physics

27

Crab Nebula, Gravitational Waves, Neutron Stars, Pulsars, Relativity, Stellar Rotation, Estimating, Oblate Spheroids, Starquakes, Stellar Luminosity, Stellar Magnitude

Scientific paper

It is reported that the amplitude of the gravitational waves from the Crab pulsar (PSR0531+21) is likely to be within 2 orders of magnitude of 10 to the minus 27th power. The Vela pulsar (PSR0833-45), however, produces probably waves of amplitude a factor 10 to 100 larger. The waves are produced by the rotation of mass asymmetries in the neutron star. The asymmetries dominating the radiation are very likely related to a rotational flattening of the neutron star. The oblateness of the star is predicted by standard starquake theory and by calculations of the critical strain which the crust (for the Crab) or the core (for Vela) can withstand before fracturing. The most probable values for the vital parameters which determine the gravitational luminosity are summarized in a table.

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