Pulsar polarization: a partial-coherence model
The population of radio pulsars is observed to demonstrate certain polarization properties not explained by the conventional picture of pulsar polarization, namely frequency evolution of polarization, deviations of the linear polarization angle from a curve of geometric origins, and the presence of...
| Main Authors: | , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
Oxford University Press
2023
|
| _version_ | 1826310886911901696 |
|---|---|
| author | Oswald, LS Karastergiou, A Johnston, S |
| author_facet | Oswald, LS Karastergiou, A Johnston, S |
| author_sort | Oswald, LS |
| collection | OXFORD |
| description | The population of radio pulsars is observed to demonstrate certain polarization properties not explained by the conventional picture of pulsar polarization, namely frequency evolution of polarization, deviations of the linear polarization angle from a curve of geometric origins, and the presence of features in the circular polarization. We present the partial-coherence model as a way to explain the co-occurrence of these features and to provide an origin for circular polarization in radio pulsar profiles. We describe the mathematics of the model and demonstrate how it can explain these observed features, both on a population level and for the idiosyncrasies of individual pulsars. The partial coherence model can account for complex polarization behaviour, enabling improved access to information about pulsar geometries. We discuss the scientific implications of this for our understanding of pulsar radio emission and propagation. |
| first_indexed | 2024-03-07T08:00:07Z |
| format | Journal article |
| id | oxford-uuid:3025788c-e303-40e6-ae9b-bb6646ec4b48 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:00:07Z |
| publishDate | 2023 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:3025788c-e303-40e6-ae9b-bb6646ec4b482023-09-27T09:42:25ZPulsar polarization: a partial-coherence modelJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3025788c-e303-40e6-ae9b-bb6646ec4b48EnglishSymplectic ElementsOxford University Press2023Oswald, LSKarastergiou, AJohnston, SThe population of radio pulsars is observed to demonstrate certain polarization properties not explained by the conventional picture of pulsar polarization, namely frequency evolution of polarization, deviations of the linear polarization angle from a curve of geometric origins, and the presence of features in the circular polarization. We present the partial-coherence model as a way to explain the co-occurrence of these features and to provide an origin for circular polarization in radio pulsar profiles. We describe the mathematics of the model and demonstrate how it can explain these observed features, both on a population level and for the idiosyncrasies of individual pulsars. The partial coherence model can account for complex polarization behaviour, enabling improved access to information about pulsar geometries. We discuss the scientific implications of this for our understanding of pulsar radio emission and propagation. |
| spellingShingle | Oswald, LS Karastergiou, A Johnston, S Pulsar polarization: a partial-coherence model |
| title | Pulsar polarization: a partial-coherence model |
| title_full | Pulsar polarization: a partial-coherence model |
| title_fullStr | Pulsar polarization: a partial-coherence model |
| title_full_unstemmed | Pulsar polarization: a partial-coherence model |
| title_short | Pulsar polarization: a partial-coherence model |
| title_sort | pulsar polarization a partial coherence model |
| work_keys_str_mv | AT oswaldls pulsarpolarizationapartialcoherencemodel AT karastergioua pulsarpolarizationapartialcoherencemodel AT johnstons pulsarpolarizationapartialcoherencemodel |