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A LOFAR-uGMRT spectral index study of distant radio halos
Context. Radio halos are megaparsec-scale diffuse radio sources mostly located at the centres of merging galaxy clusters. The common mechanism invoked to explain their origin is the re-acceleration of relativistic particles caused by large-scale turbulence. Aims. Current re-acceleration models predi...
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Published in: | Astronomy and astrophysics (Berlin) 2021-10, Vol.654, p.A166 |
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Main Authors: | , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Context.
Radio halos are megaparsec-scale diffuse radio sources mostly located at the centres of merging galaxy clusters. The common mechanism invoked to explain their origin is the re-acceleration of relativistic particles caused by large-scale turbulence.
Aims.
Current re-acceleration models predict that a significant number of halos at high redshift should be characterised by very steep spectra (
α
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ISSN: | 0004-6361 1432-0746 1432-0756 |
DOI: | 10.1051/0004-6361/202141510 |