On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array
We search for the signature of an isotropic stochastic gravitational-wave background in pulsar timing observations using a frequency-domain correlation technique. These observations, which span roughly 12 yr, were obtained with the 64-m Parkes radio telescope augmented by public domain observations...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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Wiley-Blackwell Publishing Ltd.
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/13890 |
| _version_ | 1848748469449129984 |
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| author | Yardley, D. Coles, W. Hobbs, G. Verbiest, J. Manchester R. N. van Straten W. Jenet F. A. Bailes M. Bhat, Ramesh Burke-Spolaor, S. Champion, D. J. Hotan, Aidan Oslowski, S. Reynolds, J. E. Sarkissian, J. M. |
| author_facet | Yardley, D. Coles, W. Hobbs, G. Verbiest, J. Manchester R. N. van Straten W. Jenet F. A. Bailes M. Bhat, Ramesh Burke-Spolaor, S. Champion, D. J. Hotan, Aidan Oslowski, S. Reynolds, J. E. Sarkissian, J. M. |
| author_sort | Yardley, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We search for the signature of an isotropic stochastic gravitational-wave background in pulsar timing observations using a frequency-domain correlation technique. These observations, which span roughly 12 yr, were obtained with the 64-m Parkes radio telescope augmented by public domain observations from the Arecibo Observatory. A wide range of signal processing issues unique to pulsar timing and not previously presented in the literature are discussed. These include the effects of quadratic removal, irregular sampling and variable errors which exacerbate the spectral leakage inherent in estimating the steep red spectrum of the gravitational-wave background. These observations are found to be consistent with the null hypothesis that no gravitational-wave background is present, with 76 per cent confidence. We show that the detection statistic is dominated by the contributions of only a few pulsars because of the inhomogeneity of this data set. The issues of detecting the signature of a gravitational-wave background with future observations are discussed. |
| first_indexed | 2025-11-14T07:05:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-13890 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:05:32Z |
| publishDate | 2011 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-138902017-09-13T15:36:41Z On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array Yardley, D. Coles, W. Hobbs, G. Verbiest, J. Manchester R. N. van Straten W. Jenet F. A. Bailes M. Bhat, Ramesh Burke-Spolaor, S. Champion, D. J. Hotan, Aidan Oslowski, S. Reynolds, J. E. Sarkissian, J. M. gravitational waves stars: pulsars: general methods: data analysis We search for the signature of an isotropic stochastic gravitational-wave background in pulsar timing observations using a frequency-domain correlation technique. These observations, which span roughly 12 yr, were obtained with the 64-m Parkes radio telescope augmented by public domain observations from the Arecibo Observatory. A wide range of signal processing issues unique to pulsar timing and not previously presented in the literature are discussed. These include the effects of quadratic removal, irregular sampling and variable errors which exacerbate the spectral leakage inherent in estimating the steep red spectrum of the gravitational-wave background. These observations are found to be consistent with the null hypothesis that no gravitational-wave background is present, with 76 per cent confidence. We show that the detection statistic is dominated by the contributions of only a few pulsars because of the inhomogeneity of this data set. The issues of detecting the signature of a gravitational-wave background with future observations are discussed. 2011 Journal Article http://hdl.handle.net/20.500.11937/13890 10.1111/j.1365-2966.2011.18517.x Wiley-Blackwell Publishing Ltd. fulltext |
| spellingShingle | gravitational waves stars: pulsars: general methods: data analysis Yardley, D. Coles, W. Hobbs, G. Verbiest, J. Manchester R. N. van Straten W. Jenet F. A. Bailes M. Bhat, Ramesh Burke-Spolaor, S. Champion, D. J. Hotan, Aidan Oslowski, S. Reynolds, J. E. Sarkissian, J. M. On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array |
| title | On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array |
| title_full | On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array |
| title_fullStr | On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array |
| title_full_unstemmed | On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array |
| title_short | On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array |
| title_sort | on detection of the stochastic gravitational-wave background using the parkes pulsar timing array |
| topic | gravitational waves stars: pulsars: general methods: data analysis |
| url | http://hdl.handle.net/20.500.11937/13890 |