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LOFAR imaging of Cygnus A – direct detection of a turnover in the hotspot radio spectra

Abstract:

The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical processes operating at the site of the jet termination. These processes are responsible for the dissipation of jet kinetic energy, particle acceleration, and magnetic-field generation. Here, we report new observations of the powerful radio galaxy Cygnus A using the Low Frequency Array (LOFAR) between 109 and 183 MHz, at an angular resolution of ∼3.5 arcsec. The ra...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1093/mnras/stw2105

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Grant:
(FP7/2007-2013) RADIOLIFE-320745
Publisher:
Oxford University Press Publisher's website
Journal:
Monthly Notices of the Royal Astronomical Society Journal website
Volume:
463
Issue:
3
Pages:
3143-3150
Publication date:
2016-08-24
Acceptance date:
2016-08-19
DOI:
ISSN:
0035-8711 and 1365-2966
Pubs id:
pubs:667228
URN:
uri:ec5051b6-2349-4784-b24f-16380ddb72bb
UUID:
uuid:ec5051b6-2349-4784-b24f-16380ddb72bb
Local pid:
pubs:667228
Paper number:
3

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