A study of spatial correlations in pulsar timing array data
Pulsar timing array experiments search for phenomena that produce angular correlations in the arrival times of signals from millisecond pulsars. The primary goal is to detect an isotropic and stochastic gravitational wave background. We use simulated data to show that this search can be affected by...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Oxford University Press
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/15433 |
| _version_ | 1848748891598487552 |
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| author | Tiburzi, C. Hobbs, G. Kerr, M. Coles, W. Dai, S. Manchester, R. Possenti, A. Shannon, Ryan You, X. |
| author_facet | Tiburzi, C. Hobbs, G. Kerr, M. Coles, W. Dai, S. Manchester, R. Possenti, A. Shannon, Ryan You, X. |
| author_sort | Tiburzi, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Pulsar timing array experiments search for phenomena that produce angular correlations in the arrival times of signals from millisecond pulsars. The primary goal is to detect an isotropic and stochastic gravitational wave background. We use simulated data to show that this search can be affected by the presence of other spatially correlated noise, such as errors in the reference time standard, errors in the planetary ephemeris, the solar wind and instrumentation issues. All these effects can induce significant false detections of gravitational waves. We test mitigation routines to account for clock errors, ephemeris errors and the solar wind. We demonstrate that it is non-trivial to find an effective mitigation routine for the planetary ephemeris and emphasize that other spatially correlated signals may be present in the data. |
| first_indexed | 2025-11-14T07:12:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-15433 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:12:15Z |
| publishDate | 2016 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-154332018-03-29T09:07:21Z A study of spatial correlations in pulsar timing array data Tiburzi, C. Hobbs, G. Kerr, M. Coles, W. Dai, S. Manchester, R. Possenti, A. Shannon, Ryan You, X. Pulsar timing array experiments search for phenomena that produce angular correlations in the arrival times of signals from millisecond pulsars. The primary goal is to detect an isotropic and stochastic gravitational wave background. We use simulated data to show that this search can be affected by the presence of other spatially correlated noise, such as errors in the reference time standard, errors in the planetary ephemeris, the solar wind and instrumentation issues. All these effects can induce significant false detections of gravitational waves. We test mitigation routines to account for clock errors, ephemeris errors and the solar wind. We demonstrate that it is non-trivial to find an effective mitigation routine for the planetary ephemeris and emphasize that other spatially correlated signals may be present in the data. 2016 Journal Article http://hdl.handle.net/20.500.11937/15433 10.1093/mnras/stv2143 Oxford University Press restricted |
| spellingShingle | Tiburzi, C. Hobbs, G. Kerr, M. Coles, W. Dai, S. Manchester, R. Possenti, A. Shannon, Ryan You, X. A study of spatial correlations in pulsar timing array data |
| title | A study of spatial correlations in pulsar timing array data |
| title_full | A study of spatial correlations in pulsar timing array data |
| title_fullStr | A study of spatial correlations in pulsar timing array data |
| title_full_unstemmed | A study of spatial correlations in pulsar timing array data |
| title_short | A study of spatial correlations in pulsar timing array data |
| title_sort | study of spatial correlations in pulsar timing array data |
| url | http://hdl.handle.net/20.500.11937/15433 |