|V|: New insight into the circular polarization of radio pulsars
We present a study of single pulses from nine bright northern pulsars to investigate the behaviour of circular polarisation, V. The observations were conducted with the Effelsberg 100-m radio telescope at 1.41 GHz and 4.85 GHz and the Westerbork radio telescope at 352 MHz. For the first time, we pre...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Published: |
2003
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| _version_ | 1826263250106318848 |
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| author | Karastergiou, A Johnston, S Mitra, D Leeuwen, A Edwards, RT |
| author_facet | Karastergiou, A Johnston, S Mitra, D Leeuwen, A Edwards, RT |
| author_sort | Karastergiou, A |
| collection | OXFORD |
| description | We present a study of single pulses from nine bright northern pulsars to investigate the behaviour of circular polarisation, V. The observations were conducted with the Effelsberg 100-m radio telescope at 1.41 GHz and 4.85 GHz and the Westerbork radio telescope at 352 MHz. For the first time, we present the average profile of the absolute circular polarisation |V| in the single pulses. We demonstrate that the average profile of |V| is the distinguishing feature between pulse components that exhibit low V in the single pulses and components that exhibit high V of either handedness, despite both cases resulting in a low mean. We also show that the |V| average profile remains virtually constant with frequency, which is not generally the case for V, leading us to the conclusion that |V| is a key quantity in the pulsar emission problem. |
| first_indexed | 2024-03-06T19:48:44Z |
| format | Journal article |
| id | oxford-uuid:233ee387-5aa1-4924-885a-06ce9549d419 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:48:44Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:233ee387-5aa1-4924-885a-06ce9549d4192022-03-26T11:43:19Z|V|: New insight into the circular polarization of radio pulsarsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:233ee387-5aa1-4924-885a-06ce9549d419Symplectic Elements at Oxford2003Karastergiou, AJohnston, SMitra, DLeeuwen, AEdwards, RTWe present a study of single pulses from nine bright northern pulsars to investigate the behaviour of circular polarisation, V. The observations were conducted with the Effelsberg 100-m radio telescope at 1.41 GHz and 4.85 GHz and the Westerbork radio telescope at 352 MHz. For the first time, we present the average profile of the absolute circular polarisation |V| in the single pulses. We demonstrate that the average profile of |V| is the distinguishing feature between pulse components that exhibit low V in the single pulses and components that exhibit high V of either handedness, despite both cases resulting in a low mean. We also show that the |V| average profile remains virtually constant with frequency, which is not generally the case for V, leading us to the conclusion that |V| is a key quantity in the pulsar emission problem. |
| spellingShingle | Karastergiou, A Johnston, S Mitra, D Leeuwen, A Edwards, RT |V|: New insight into the circular polarization of radio pulsars |
| title | |V|: New insight into the circular polarization of radio pulsars |
| title_full | |V|: New insight into the circular polarization of radio pulsars |
| title_fullStr | |V|: New insight into the circular polarization of radio pulsars |
| title_full_unstemmed | |V|: New insight into the circular polarization of radio pulsars |
| title_short | |V|: New insight into the circular polarization of radio pulsars |
| title_sort | v new insight into the circular polarization of radio pulsars |
| work_keys_str_mv | AT karastergioua vnewinsightintothecircularpolarizationofradiopulsars AT johnstons vnewinsightintothecircularpolarizationofradiopulsars AT mitrad vnewinsightintothecircularpolarizationofradiopulsars AT leeuwena vnewinsightintothecircularpolarizationofradiopulsars AT edwardsrt vnewinsightintothecircularpolarizationofradiopulsars |