Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky
We present the wide-field imaging and polarimetry at ? = 20 GHz of seven most extended, bright (Stotal = 0.50 Jy), high-frequency selected radio sources in the southern sky with declinations d < -30°. Accompanying the data are brief reviews of the literature for each source. The results prese...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Oxford University Press
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/13632 |
| _version_ | 1848748397716045824 |
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| author | Burke-Spolaor, S. Ekers, Ronald Massardi, M. Murphy, T. Partridge, B. Ricci, R. Sadler, E. |
| author_facet | Burke-Spolaor, S. Ekers, Ronald Massardi, M. Murphy, T. Partridge, B. Ricci, R. Sadler, E. |
| author_sort | Burke-Spolaor, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the wide-field imaging and polarimetry at ? = 20 GHz of seven most extended, bright (Stotal = 0.50 Jy), high-frequency selected radio sources in the southern sky with declinations d < -30°. Accompanying the data are brief reviews of the literature for each source. The results presented here aid in the statistical completeness of the Australia Telescope 20-GHz Survey: the Bright Source Sample. The data are of crucial interest for future cosmic microwave background missions as a collection of information about candidate calibrator sources. We were able to obtain data for seven of the nine sources identified by our selection criteria. We report that Pictor A is thus far the best extragalactic calibrator candidate for the Low Frequency Instrument of the Planck European Space Agency mission due to its high level of integrated polarized flux density (~0.50 ± 0.06 Jy) on a scale of 10 arcmin. Six out of the seven sources have a clearly detected compact radio core in our images, with either a null detection or less than 2 per cent detection of polarized emission from the nuclei. Most sources with detected jets have magnetic field alignments running in a longitudinal configuration, however, PKS 1333-33 exhibits transverse fields and an orthogonal change in field geometry from nucleus to jets. © 2009 RAS. |
| first_indexed | 2025-11-14T07:04:24Z |
| format | Journal Article |
| id | curtin-20.500.11937-13632 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:04:24Z |
| publishDate | 2009 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-136322017-09-13T15:00:25Z Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky Burke-Spolaor, S. Ekers, Ronald Massardi, M. Murphy, T. Partridge, B. Ricci, R. Sadler, E. We present the wide-field imaging and polarimetry at ? = 20 GHz of seven most extended, bright (Stotal = 0.50 Jy), high-frequency selected radio sources in the southern sky with declinations d < -30°. Accompanying the data are brief reviews of the literature for each source. The results presented here aid in the statistical completeness of the Australia Telescope 20-GHz Survey: the Bright Source Sample. The data are of crucial interest for future cosmic microwave background missions as a collection of information about candidate calibrator sources. We were able to obtain data for seven of the nine sources identified by our selection criteria. We report that Pictor A is thus far the best extragalactic calibrator candidate for the Low Frequency Instrument of the Planck European Space Agency mission due to its high level of integrated polarized flux density (~0.50 ± 0.06 Jy) on a scale of 10 arcmin. Six out of the seven sources have a clearly detected compact radio core in our images, with either a null detection or less than 2 per cent detection of polarized emission from the nuclei. Most sources with detected jets have magnetic field alignments running in a longitudinal configuration, however, PKS 1333-33 exhibits transverse fields and an orthogonal change in field geometry from nucleus to jets. © 2009 RAS. 2009 Journal Article http://hdl.handle.net/20.500.11937/13632 10.1111/j.1365-2966.2009.14556.x Oxford University Press unknown |
| spellingShingle | Burke-Spolaor, S. Ekers, Ronald Massardi, M. Murphy, T. Partridge, B. Ricci, R. Sadler, E. Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky |
| title | Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky |
| title_full | Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky |
| title_fullStr | Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky |
| title_full_unstemmed | Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky |
| title_short | Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky |
| title_sort | wide-field imaging and polarimetry for the biggest and brightest in the 20-ghz southern sky |
| url | http://hdl.handle.net/20.500.11937/13632 |