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...
| Những tác giả chính: | , , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
2009
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| _version_ | 1826268775764197376 |
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| author | Karastergiou, A Hotan, A van Straten, W McLaughlin, M Ord, S |
| author_facet | Karastergiou, A Hotan, A van Straten, W McLaughlin, M Ord, S |
| author_sort | Karastergiou, A |
| collection | OXFORD |
| 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 Ė: 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 rotating radio transient is derived. © 2009 The Authors. Journal compilation © 2009 RAS. |
| first_indexed | 2024-03-06T21:14:47Z |
| format | Journal article |
| id | oxford-uuid:3f676553-a0e3-449e-99ff-cfd6e1c6c634 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:14:47Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:3f676553-a0e3-449e-99ff-cfd6e1c6c6342022-03-26T14:31:50ZRadio polarization measurements from RRAT J1819-1458Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3f676553-a0e3-449e-99ff-cfd6e1c6c634EnglishSymplectic Elements at Oxford2009Karastergiou, AHotan, Avan Straten, WMcLaughlin, MOrd, SWe 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 Ė: 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 rotating radio transient is derived. © 2009 The Authors. Journal compilation © 2009 RAS. |
| spellingShingle | Karastergiou, A Hotan, A 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 |
| work_keys_str_mv | AT karastergioua radiopolarizationmeasurementsfromrratj18191458 AT hotana radiopolarizationmeasurementsfromrratj18191458 AT vanstratenw radiopolarizationmeasurementsfromrratj18191458 AT mclaughlinm radiopolarizationmeasurementsfromrratj18191458 AT ords radiopolarizationmeasurementsfromrratj18191458 |