Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.315..547d&link_type=abstract
Nature (ISSN 0028-0836), vol. 315, June 13, 1985, p. 547-550.
Astronomy and Astrophysics
Astronomy
87
Astronomical Coordinates, Atomic Clocks, Gravitational Waves, Pulsars, Universe, Accuracy, Circular Polarization, Data Reduction, Flux Density, Interstellar Matter, Microwaves, Power Spectra
Scientific paper
Long-term studies of pulse arrival times for the pulsar PSR 1937+21 yield estimates of the pulsar's period, spin-down rate and celestial coordinates with unprecedented accuracies. Over periods exceeding six months, this pulsar is at least comparable in stability to the best man-made atomic clocks. The results place a limit on the energy density of low-frequency gravitational waves in the Universe.
Backer Donald C.
Davis Martin
Taylor Joseph H. Jr.
Weisberg Joel M.
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