High time resolution and polarization properties of ASKAP-localized fast radio bursts
Combining high time and frequency resolution full-polarization spectra of fast radio bursts (FRBs) with knowledge of their host galaxy properties provides an opportunity to study both the emission mechanism generating them and the impact of their propagation through their local environment, host gal...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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OXFORD UNIV PRESS
2020
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/FT150100415 http://hdl.handle.net/20.500.11937/90069 |
| _version_ | 1848765324701204480 |
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| author | Day, C.K. Deller, A.T. Shannon, Ryan Qiu, H. Bannister, K.W. Bhandari, S. Ekers, Ronald Flynn, C. James, Clancy Macquart, Jean-Pierre Mahony, E.K. Phillips, C.J. Xavier Prochaska, J. |
| author_facet | Day, C.K. Deller, A.T. Shannon, Ryan Qiu, H. Bannister, K.W. Bhandari, S. Ekers, Ronald Flynn, C. James, Clancy Macquart, Jean-Pierre Mahony, E.K. Phillips, C.J. Xavier Prochaska, J. |
| author_sort | Day, C.K. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Combining high time and frequency resolution full-polarization spectra of fast radio bursts (FRBs) with knowledge of their host galaxy properties provides an opportunity to study both the emission mechanism generating them and the impact of their propagation through their local environment, host galaxy, and the intergalactic medium. The Australian Square Kilometre Array Pathfinder (ASKAP) telescope has provided the first ensemble of bursts with this information. In this paper, we present the high time and spectral resolution, full polarization observations of five localized FRBs to complement the results published for the previously studied ASKAP FRB 181112. We find that every FRB is highly polarized, with polarization fractions ranging from 80 to 100 per cent, and that they are generally dominated by linear polarization. While some FRBs in our sample exhibit properties associated with an emerging archetype (i.e. repeating or apparently non-repeating), others exhibit characteristic features of both, implying the existence of a continuum of FRB properties. When examined at high time resolution, we find that all FRBs in our sample have evidence for multiple subcomponents and for scattering at a level greater than expected from the Milky Way. We find no correlation between the diverse range of FRB properties (e.g. scattering time, intrinsic width, and rotation measure) and any global property of their host galaxy. The most heavily scattered bursts reside in the outskirts of their host galaxies, suggesting that the source-local environment rather than the host interstellar medium is likely the dominant origin of the scattering in our sample. |
| first_indexed | 2025-11-14T11:33:27Z |
| format | Journal Article |
| id | curtin-20.500.11937-90069 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:33:27Z |
| publishDate | 2020 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-900692023-02-09T03:39:03Z High time resolution and polarization properties of ASKAP-localized fast radio bursts Day, C.K. Deller, A.T. Shannon, Ryan Qiu, H. Bannister, K.W. Bhandari, S. Ekers, Ronald Flynn, C. James, Clancy Macquart, Jean-Pierre Mahony, E.K. Phillips, C.J. Xavier Prochaska, J. Science & Technology Physical Sciences Astronomy & Astrophysics polarization techniques: interferometric astrometry fast radio bursts PROPAGATION CONSTRAINTS EMISSION PULSARS Combining high time and frequency resolution full-polarization spectra of fast radio bursts (FRBs) with knowledge of their host galaxy properties provides an opportunity to study both the emission mechanism generating them and the impact of their propagation through their local environment, host galaxy, and the intergalactic medium. The Australian Square Kilometre Array Pathfinder (ASKAP) telescope has provided the first ensemble of bursts with this information. In this paper, we present the high time and spectral resolution, full polarization observations of five localized FRBs to complement the results published for the previously studied ASKAP FRB 181112. We find that every FRB is highly polarized, with polarization fractions ranging from 80 to 100 per cent, and that they are generally dominated by linear polarization. While some FRBs in our sample exhibit properties associated with an emerging archetype (i.e. repeating or apparently non-repeating), others exhibit characteristic features of both, implying the existence of a continuum of FRB properties. When examined at high time resolution, we find that all FRBs in our sample have evidence for multiple subcomponents and for scattering at a level greater than expected from the Milky Way. We find no correlation between the diverse range of FRB properties (e.g. scattering time, intrinsic width, and rotation measure) and any global property of their host galaxy. The most heavily scattered bursts reside in the outskirts of their host galaxies, suggesting that the source-local environment rather than the host interstellar medium is likely the dominant origin of the scattering in our sample. 2020 Journal Article http://hdl.handle.net/20.500.11937/90069 10.1093/mnras/staa2138 English http://purl.org/au-research/grants/arc/FT150100415 http://purl.org/au-research/grants/arc/FT190100155 http://purl.org/au-research/grants/arc/DP180100857 OXFORD UNIV PRESS fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics polarization techniques: interferometric astrometry fast radio bursts PROPAGATION CONSTRAINTS EMISSION PULSARS Day, C.K. Deller, A.T. Shannon, Ryan Qiu, H. Bannister, K.W. Bhandari, S. Ekers, Ronald Flynn, C. James, Clancy Macquart, Jean-Pierre Mahony, E.K. Phillips, C.J. Xavier Prochaska, J. High time resolution and polarization properties of ASKAP-localized fast radio bursts |
| title | High time resolution and polarization properties of ASKAP-localized fast radio bursts |
| title_full | High time resolution and polarization properties of ASKAP-localized fast radio bursts |
| title_fullStr | High time resolution and polarization properties of ASKAP-localized fast radio bursts |
| title_full_unstemmed | High time resolution and polarization properties of ASKAP-localized fast radio bursts |
| title_short | High time resolution and polarization properties of ASKAP-localized fast radio bursts |
| title_sort | high time resolution and polarization properties of askap-localized fast radio bursts |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics polarization techniques: interferometric astrometry fast radio bursts PROPAGATION CONSTRAINTS EMISSION PULSARS |
| url | http://purl.org/au-research/grants/arc/FT150100415 http://purl.org/au-research/grants/arc/FT150100415 http://purl.org/au-research/grants/arc/FT150100415 http://hdl.handle.net/20.500.11937/90069 |