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  1. OA@INAF
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  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/32299
Title: Spectral Index of the Filaments in the Abell 523 Radio Halo
Authors: VACCA, VALENTINA 
GOVONI, FEDERICA 
Perley, Richard A.
MURGIA, MATTEO 
CARRETTI, ETTORE 
LOI, FRANCESCA 
FERETTI, LUIGINA 
Giovannini, Gabriele 
Issue Date: 2021
Journal: GALAXIES 
Number: 9
Issue: 4
First Page: 112
Abstract: The galaxy cluster Abell 523 hosts a radio halo characterized by the presence of two filaments transversely located with respect to the cluster merger axis. In this paper, we present a spectral index image of these filaments between 1.410 and 1.782 GHz obtained with Jansky Very Large Array observations. We find a steepening of the spectral index of the filaments at frequencies 1.4 GHz and an indication that bright patches are characterized by flat spectral indices. Our results are consistent with a scenario of highly-efficient turbulence induced by merger phenomena.
URI: http://hdl.handle.net/20.500.12386/32299
URL: https://www.mdpi.com/2075-4434/9/4/112
https://api.elsevier.com/content/abstract/scopus_id/85120777008
ISSN: 2075-4434
DOI: 10.3390/galaxies9040112
Bibcode ADS: 2021Galax...9..112V
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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