Click here to view this collection in the new DAP user interface
Parkes observations for project P456 semester 2010APRS
The Parkes Pulsar Timing Array (PPTA) project has three primary goals: (a) detection of gravitational waves from astronomical sources, (b) establishment of a pulsar timescale, and (c) improvement of our understanding of Solar-system dynamics. There are many secondary goals, some astrophysical and some instrumental/technique oriented. Achievement of... more these ambitious primary goals requires frequent observations of at least 20 MSPs at two or preferably three widely spaced frequencies over several years. We wish to continue observing the PPTA sample at intervals of 2-3 weeks using both the 10/50cm and Multibeam receivers. The digital filterbanks (PDFB3, PDFB4) and the baseband systems (CPSR2; APSR) are used for data recording. With the new instruments and development of an efficient pipeline processing system, we have achieved the world's best pulsar timing precision, with four pulsars having rms residuals of less than or about 100 ns and 13 less than 1 microsecond. We are collaborating with the European and North American pulsar timing array groups (EPTA and NANOGrav, respectively) to obtain more frequent observations and a larger pulsar sample. Because of the high sensitivity and wide bandwidths required, RFI mitigation is an important part of the project. less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2010
30 Sep 2010
Creative Commons Attribution 4.0 International Licence
Manchester, Dick; Sarkissian, John; Hobbs, George; Bailes, Matthew; Bhat, Ramesh; Jenet, Rick; Burke-Spolaor, Sarah; van Straten, Willem; Yardley, Daniel Roger Billing; Oslowski, Stefan; Hotan, Aidan; Champion, David (2010): Parkes observations for project P456 semester 2010APRS. v3. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2010.
The metadata and files (if any) are available to the public.
Australia Telescope National Facility
P456 - A millisecond pulsar timing array
Gravitational waves are a prediction of Einstein's general theory of relativity. Despite many searches over several decades and much current effort, there has never been a direct detection of these waves. Such a detection would open up a window into presently unobservable phenomena such as orbiting black holes in the cores of distant galaxies. Puls... morears are such precise clocks that the effect of a weak gravitational wave from such sources passing over the Earth may be detectable. The Parkes Pulsar Timing Array project aims to make precise timing measurements on 20 millisecond pulsars with observations every two weeks for five years. Modelling suggests that with the improved instrumentation currently being developed and this dataspan we will have enough sensitivity to detect gravitational waves. The data will also allow us to establish a pulsar timescale which should be more precise than the best terrestrial timescales based on atomic clocks. less
Willem van Straten
Daniel Roger Billing Yardley