Radio polarization measurements from RRAT J1819-1458
We present the first polarization measurements of the radio emission from RRAT J1819-1458. Our observations, conducted in parallel to regular timing sessions, have yielded a small number of bright and polarized pulses. The polarization characteristics and integrated profile resemble those of normal...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Wiley-Blackwell Publishing Ltd.
2009
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/9853 |
| _version_ | 1848746070141566976 |
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| author | Karastergiou, A. Hotan, Aidan van Straten, W. McLaughlin, M. Ord, S. |
| author_facet | Karastergiou, A. Hotan, Aidan van Straten, W. McLaughlin, M. Ord, S. |
| author_sort | Karastergiou, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the first polarization measurements of the radio emission from RRAT J1819-1458. Our observations, conducted in parallel to regular timing sessions, have yielded a small number of bright and polarized pulses. The polarization characteristics and integrated profile resemble those of normal pulsars with average spin-down energy E: moderate to low linear polarization in the integrated profile despite relatively high polarization in the individual pulses. On average, a small degree of circular polarization is also observed. The polarization position angle (PA) executes a remarkably smooth, steep S-shaped curve, interrupted by two orthogonal jumps. Based on the shape of the PA swing, we place some constraints on the emission geometry. We compare these polarization properties to those of other radio-emitting neutron star populations, including young pulsars, pulsars with a high surface magnetic field and radio-emitting magnetars. From the polarization measurements, the Faraday rotation measure of this rotation radio transient is derived. |
| first_indexed | 2025-11-14T06:27:24Z |
| format | Journal Article |
| id | curtin-20.500.11937-9853 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:27:24Z |
| publishDate | 2009 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-98532017-09-13T16:01:58Z Radio polarization measurements from RRAT J1819-1458 Karastergiou, A. Hotan, Aidan van Straten, W. McLaughlin, M. Ord, S. polarization J1819-1458 individual pulsars We present the first polarization measurements of the radio emission from RRAT J1819-1458. Our observations, conducted in parallel to regular timing sessions, have yielded a small number of bright and polarized pulses. The polarization characteristics and integrated profile resemble those of normal pulsars with average spin-down energy E: moderate to low linear polarization in the integrated profile despite relatively high polarization in the individual pulses. On average, a small degree of circular polarization is also observed. The polarization position angle (PA) executes a remarkably smooth, steep S-shaped curve, interrupted by two orthogonal jumps. Based on the shape of the PA swing, we place some constraints on the emission geometry. We compare these polarization properties to those of other radio-emitting neutron star populations, including young pulsars, pulsars with a high surface magnetic field and radio-emitting magnetars. From the polarization measurements, the Faraday rotation measure of this rotation radio transient is derived. 2009 Journal Article http://hdl.handle.net/20.500.11937/9853 10.1111/j.1745-3933.2009.00671.x Wiley-Blackwell Publishing Ltd. unknown |
| spellingShingle | polarization J1819-1458 individual pulsars Karastergiou, A. Hotan, Aidan van Straten, W. McLaughlin, M. Ord, S. Radio polarization measurements from RRAT J1819-1458 |
| title | Radio polarization measurements from RRAT J1819-1458 |
| title_full | Radio polarization measurements from RRAT J1819-1458 |
| title_fullStr | Radio polarization measurements from RRAT J1819-1458 |
| title_full_unstemmed | Radio polarization measurements from RRAT J1819-1458 |
| title_short | Radio polarization measurements from RRAT J1819-1458 |
| title_sort | radio polarization measurements from rrat j1819-1458 |
| topic | polarization J1819-1458 individual pulsars |
| url | http://hdl.handle.net/20.500.11937/9853 |