| Download | - View final version: The extraordinary linear polarisation structure of the Southern Centaurus a lobe revealed by ASKAP (PDF, 727 KiB)
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| DOI | Resolve DOI: https://doi.org/10.3390/galaxies6040127 |
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| Author | Search for: Anderson, Craig; Search for: Heald, George; Search for: O’Sullivan, Shane; Search for: Bunton, John; Search for: Carretti, Ettore; Search for: Chippendale, Aaron; Search for: Collier, Jordan; Search for: Farnes, Jamie; Search for: Gaensler, Bryan; Search for: Harvey-Smith, Lisa; Search for: Koribalski, Bärbel; Search for: Landecker, Tom1; Search for: Lenc, Emil; Search for: Mcclure-Griffiths, Naomi; Search for: Mitchell, Daniel; Search for: Rudnick, Lawrence; Search for: West, Jennifer1 |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Subject | magnetic fields; faraday tomography; magnetic turbulence; AGN |
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| Abstract | We present observations of linear polarisation in the southern radio lobe of Centaurus A, conducted during commissioning of the Australian Square Kilometre Array Pathfinder (ASKAP) telescope. We used 16 antennas to observe a 30 square degree region in a single 12-h pointing over a 240 MHz band centred on 913 MHz. Our observations achieve an angular resolution of 26×33 arcseconds (480 parsecs), a maximum recoverable angular scale of 30 arcminutes, and a full-band sensitivity of 85 μ Jy beam −1 . The resulting maps of polarisation and Faraday rotation are amongst the most detailed ever made for radio lobes, with order 10 5 resolution elements covering the source. We describe several as-yet unreported observational features of the lobe, including its detailed peak Faraday depth structure, and intricate networks of depolarised filaments. These results demonstrate the exciting capabilities of ASKAP for widefield radio polarimetry. |
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| Publication date | 2018-11-29 |
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| Publisher | MDPI |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | galaxies6040127 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | caa57268-8d72-4887-a0b1-4f03d6ef272b |
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| Record created | 2019-05-03 |
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| Record modified | 2020-05-30 |
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