Tracking dispersion measure variations of timing array pulsars with the GMRT
We present the results from nearly three years of monitoring of the variations in dispersion measure (DM) along the line-of-sight to 11 millisecond pulsars using the Giant Metrewave Radio Telescope (GMRT). These results demonstrate accuracies of single epoch DM estimates of the order of 5 × 10-4 cm-...
| Main Authors: | , , , , , , , |
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| Format: | Conference Paper |
| Published: |
2012
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| Online Access: | http://www.pulsarastronomy.net/IAUS291/proceedings/ http://hdl.handle.net/20.500.11937/50727 |
| _version_ | 1848758526359371776 |
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| author | Kumar, U. Gupta, Y. Van Straten, W. Oslowski, S. Roy, J. Bhat, Ramesh Bailes, M. Keith, M. |
| author_facet | Kumar, U. Gupta, Y. Van Straten, W. Oslowski, S. Roy, J. Bhat, Ramesh Bailes, M. Keith, M. |
| author_sort | Kumar, U. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the results from nearly three years of monitoring of the variations in dispersion measure (DM) along the line-of-sight to 11 millisecond pulsars using the Giant Metrewave Radio Telescope (GMRT). These results demonstrate accuracies of single epoch DM estimates of the order of 5 × 10-4 cm-3 pc. A preliminary comparison with the Parkes Pulsar Timing Array (PPTA) data shows that the measured DM fluctuations are comparable. We show effects of DM variations due to the solar wind and solar corona and compare with the existing models. |
| first_indexed | 2025-11-14T09:45:23Z |
| format | Conference Paper |
| id | curtin-20.500.11937-50727 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:45:23Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-507272017-09-13T15:41:03Z Tracking dispersion measure variations of timing array pulsars with the GMRT Kumar, U. Gupta, Y. Van Straten, W. Oslowski, S. Roy, J. Bhat, Ramesh Bailes, M. Keith, M. We present the results from nearly three years of monitoring of the variations in dispersion measure (DM) along the line-of-sight to 11 millisecond pulsars using the Giant Metrewave Radio Telescope (GMRT). These results demonstrate accuracies of single epoch DM estimates of the order of 5 × 10-4 cm-3 pc. A preliminary comparison with the Parkes Pulsar Timing Array (PPTA) data shows that the measured DM fluctuations are comparable. We show effects of DM variations due to the solar wind and solar corona and compare with the existing models. 2012 Conference Paper http://hdl.handle.net/20.500.11937/50727 10.1017/S1743921312024404 http://www.pulsarastronomy.net/IAUS291/proceedings/ unknown |
| spellingShingle | Kumar, U. Gupta, Y. Van Straten, W. Oslowski, S. Roy, J. Bhat, Ramesh Bailes, M. Keith, M. Tracking dispersion measure variations of timing array pulsars with the GMRT |
| title | Tracking dispersion measure variations of timing array pulsars with the GMRT |
| title_full | Tracking dispersion measure variations of timing array pulsars with the GMRT |
| title_fullStr | Tracking dispersion measure variations of timing array pulsars with the GMRT |
| title_full_unstemmed | Tracking dispersion measure variations of timing array pulsars with the GMRT |
| title_short | Tracking dispersion measure variations of timing array pulsars with the GMRT |
| title_sort | tracking dispersion measure variations of timing array pulsars with the gmrt |
| url | http://www.pulsarastronomy.net/IAUS291/proceedings/ http://hdl.handle.net/20.500.11937/50727 |