Determining the Hubble constant from gravitational wave observations

Details Determining the Hubble constant from gravitational wave observations Determining the Hubble constant from gravitational wave observations

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..310s&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Sept. 25, 1986, p. 310, 311.

Astronomy and Astrophysics

Astronomy

243

Astrometry, Gravitational Waves, Hubble Constant, Binary Stars, Gravitational Wave Antennas, Kilometric Waves, Neutron Stars, Orbit Decay

Scientific paper

The author reports how gravitational wave observations can be used to determine the Hubble constant, H0. The nearly monochromatic gravitational waves emitted by the decaying orbit of an ultracompact, two-neutron-star binary system just before the stars coalesce are very likely to be detected by the kilometre-sized interferometric gravitational wave antennas now being designed. The signal is easily identified and contains enough information to determine the absolute distance to the binary, independently of any assumptions about the masses of the stars. Ten events out to 100 Mpc may suffice to measure the Hubble constant to 3% accuracy.

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