The Parkes Pulsar Timing Array

Details The Parkes Pulsar Timing Array The Parkes Pulsar Timing Array

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..16e..66m&link_type=abstract

Nomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 200

Astronomy and Astrophysics

Astronomy

Scientific paper

Using the Parkes 64-m radio telescope we are making regular timing observations of a sample of 20 millisecond pulsars at three radio frequencies near 700 MHz, 1400 MHz and 3100 MHz. The principal goals of the project are the direct detection of gravitational waves, establishment of a pulsar-based timescale and improvement of the Solar System planetary ephemeris. Observations commenced about two years ago and are typically at intervals of 2 - 3 weeks. Currently we are obtaining sub-microsecond rms timing residuals on more than half of the sample. Further development of both hardware and software systems is expected to result in improved timing precision over the next year or so. Major effort has gone into development of a new pulsar timing package, TEMPO2, which implements 1997 and 2000 IAU resolutions on timescales and coordinate systems with a goal of reducing systematic errors in pulse times-of-arrival to 1 ns or less.

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