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Multiwavelength study of Cygnus A III. Evidence for relic lobe plasma

Abstract:

We study the particle energy distribution in the cocoon surrounding Cygnus A, using radio images between 151 MHz and 15 GHz and a 200 ks Chandra ACIS-I image. We show that the excess low frequency emission in the the lobe further from Earth cannot be explained by absorption or excess adiabatic expansion of the lobe or a combination of both. We show that this excess emission is consistent with emission from a relic counterlobe and a relic counterjet that are being re-energized by compression f...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
Journal:
Monthly Notices of the Royal Astronomical Society More from this journal
Volume:
401
Issue:
1
Pages:
67-76
Publication date:
2009-09-06
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Language:
English
Keywords:
Pubs id:
pubs:41464
UUID:
uuid:052990d2-4256-418e-8c9c-b992e01af8f0
Local pid:
pubs:41464
Source identifiers:
41464
Deposit date:
2012-12-19

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